f1fd45892f
Add helper wxApp::MSWGetDefaultLayout() static method and use it instead of wxTheApp->GetLayoutDirection() in wxMSW code. This serves two purposes: first, wxMessageDialog doesn't crash when it's shown before wxTheApp is created (or after it's destroyed) any more. And second, we use the correct layout direction if the main application has enabled it by calling SetProcessDefaultLayout() or using two U+200E characters in the beginning of its "FileDescription" resource field by default now. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78236 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2932 lines
86 KiB
C++
2932 lines
86 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/dc.cpp
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// Purpose: wxDC class for MSW port
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// Author: Julian Smart
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// Modified by:
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// Created: 01/02/97
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// declarations
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// headers
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// ---------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/msw/wrapcdlg.h"
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#include "wx/image.h"
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#include "wx/window.h"
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#include "wx/utils.h"
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#include "wx/dialog.h"
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#include "wx/app.h"
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#include "wx/bitmap.h"
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#include "wx/dcmemory.h"
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#include "wx/log.h"
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#include "wx/math.h"
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#include "wx/icon.h"
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#include "wx/dcprint.h"
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#include "wx/module.h"
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#endif
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#include "wx/msw/dc.h"
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#include "wx/sysopt.h"
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#ifdef wxHAS_RAW_BITMAP
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#include "wx/rawbmp.h"
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#endif
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#include <string.h>
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#include "wx/msw/private/dc.h"
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#include "wx/private/textmeasure.h"
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#ifdef _MSC_VER
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// In the previous versions of wxWidgets, AlphaBlend() was dynamically
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// loaded from msimg32.dll during the run-time, so we didn't need to link
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// with this library. Now that we use the function statically, we do need
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// to link with it and we do it implicitly from here for MSVC users to
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// avoid breaking the build of the existing projects which didn't link with
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// this library before.
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#pragma comment(lib, "msimg32")
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// Indicate that we should just use the functions from gdi32.dll and
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// msimg32.dll directly.
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#define USE_STATIC_GDI_FUNCS
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#else // !_MSC_VER
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// In other compilers, e.g. MinGW, we don't have anything similar to
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// #pragma comment(lib) used above, so we continue loading AlphaBlend()
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// dynamically, if possible.
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//
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// We also load some GDI functions not present in MinGW libraries
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// dynamically.
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#if wxUSE_DYNLIB_CLASS
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#include "wx/dynlib.h"
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#define USE_DYNAMIC_GDI_FUNCS
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#endif
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#endif // _MSC_VER/!_MSC_VER
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using namespace wxMSWImpl;
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#ifndef AC_SRC_ALPHA
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#define AC_SRC_ALPHA 1
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#endif
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#ifndef LAYOUT_RTL
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#define LAYOUT_RTL 1
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#endif
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/* Quaternary raster codes */
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#ifndef MAKEROP4
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#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore))
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#endif
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// apparently with MicroWindows it is possible that HDC is 0 so we have to
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// check for this ourselves
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#ifdef __WXMICROWIN__
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#define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return;
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#define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x;
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#else
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#define WXMICROWIN_CHECK_HDC
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#define WXMICROWIN_CHECK_HDC_RET(x)
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#endif
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IMPLEMENT_ABSTRACT_CLASS(wxMSWDCImpl, wxDCImpl)
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// ---------------------------------------------------------------------------
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// constants
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// ---------------------------------------------------------------------------
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// The device space in Win32 GDI measures 2^27*2^27 , so we use 2^27-1 as the
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// maximal possible view port extent.
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static const int VIEWPORT_EXTENT = 134217727;
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// ROPs which don't have standard names (see "Ternary Raster Operations" in the
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// MSDN docs for how this and other numbers in wxDC::Blit() are obtained)
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#define DSTCOPY 0x00AA0029 // a.k.a. NOP operation
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// ----------------------------------------------------------------------------
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// macros for logical <-> device coords conversion
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// ----------------------------------------------------------------------------
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/*
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We currently let Windows do all the translations itself so these macros are
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not really needed (any more) but keep them to enhance readability of the
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code by allowing to see where are the logical and where are the device
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coordinates used.
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*/
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#ifdef __WXWINCE__
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#define XLOG2DEV(x) ((x-m_logicalOriginX)*m_signX)
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#define YLOG2DEV(y) ((y-m_logicalOriginY)*m_signY)
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#define XDEV2LOG(x) ((x)*m_signX+m_logicalOriginX)
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#define YDEV2LOG(y) ((y)*m_signY+m_logicalOriginY)
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#else
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#define XLOG2DEV(x) (x)
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#define YLOG2DEV(y) (y)
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#define XDEV2LOG(x) (x)
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#define YDEV2LOG(y) (y)
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#endif
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// ---------------------------------------------------------------------------
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// private functions
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// ---------------------------------------------------------------------------
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#ifdef USE_DYNAMIC_GDI_FUNCS
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namespace wxMSWImpl
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{
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// helper class to cache dynamically loaded libraries and not attempt reloading
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// them if it fails
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class wxOnceOnlyDLLLoader
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{
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public:
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// ctor argument must be a literal string as we don't make a copy of it!
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wxOnceOnlyDLLLoader(const wxChar *dllName)
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: m_dllName(dllName)
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{
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}
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// return the symbol with the given name or NULL if the DLL not loaded
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// or symbol not present
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void *GetSymbol(const wxChar *name)
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{
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// we're prepared to handle errors here
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wxLogNull noLog;
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if ( m_dllName )
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{
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m_dll.Load(m_dllName);
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// reset the name whether we succeeded or failed so that we don't
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// try again the next time
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m_dllName = NULL;
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}
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return m_dll.IsLoaded() ? m_dll.GetSymbol(name) : NULL;
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}
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void Unload()
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{
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if ( m_dll.IsLoaded() )
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{
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m_dll.Unload();
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}
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}
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private:
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wxDynamicLibrary m_dll;
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const wxChar *m_dllName;
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};
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static wxOnceOnlyDLLLoader wxMSIMG32DLL(wxT("msimg32"));
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// we must ensure that DLLs are unloaded before the static objects cleanup time
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// because we may hit the notorious DllMain() dead lock in this case if wx is
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// used as a DLL (attempting to unload another DLL from inside DllMain() hangs
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// under Windows because it tries to reacquire the same lock)
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class wxGDIDLLsCleanupModule : public wxModule
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{
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public:
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virtual bool OnInit() { return true; }
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virtual void OnExit() { wxMSIMG32DLL.Unload(); }
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private:
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DECLARE_DYNAMIC_CLASS(wxGDIDLLsCleanupModule)
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};
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IMPLEMENT_DYNAMIC_CLASS(wxGDIDLLsCleanupModule, wxModule)
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} // namespace wxMSWImpl
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#endif // USE_DYNAMIC_GDI_FUNCS
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// Namespace for the wrapper functions, hopefully one day we'll be able to get
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// rid of all of them and then it will be easy to find all occurrences of their
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// use by just searching for this namespace name.
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//
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// All of the functions in this namespace must work *exactly* like the standard
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// functions with the same name and just return an error if dynamically loading
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// them failed.
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namespace wxDynLoadWrappers
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{
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#ifdef USE_DYNAMIC_GDI_FUNCS
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// This is unfortunately necessary because GetLayout() is missing in MinGW
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// libgdi32.a import library (at least up to w32api 4.0.3).
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DWORD GetLayout(HDC hdc)
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{
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typedef DWORD (WINAPI *GetLayout_t)(HDC);
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static GetLayout_t
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wxDL_INIT_FUNC(s_pfn, GetLayout, wxDynamicLibrary(wxT("gdi32.dll")));
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return s_pfnGetLayout ? s_pfnGetLayout(hdc) : GDI_ERROR;
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}
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// SetLayout is present in newer w32api versions but in older one (e.g. the one
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// used by mingw32 4.2 Debian package), so load it dynamically too while we're
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// at it.
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DWORD SetLayout(HDC hdc, DWORD dwLayout)
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{
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typedef DWORD (WINAPI *SetLayout_t)(HDC, DWORD);
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static SetLayout_t
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wxDL_INIT_FUNC(s_pfn, SetLayout, wxDynamicLibrary(wxT("gdi32.dll")));
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return s_pfnSetLayout ? s_pfnSetLayout(hdc, dwLayout) : GDI_ERROR;
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}
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// AlphaBlend() requires linking with libmsimg32.a and we want to avoid this as
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// it would break all the existing make/project files.
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BOOL AlphaBlend(HDC hdcDest, int xDest, int yDest, int wDest, int hDest,
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HDC hdcSrc, int xSrc, int ySrc, int wSrc, int hSrc,
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BLENDFUNCTION bf)
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{
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typedef BOOL (WINAPI *AlphaBlend_t)(HDC,int,int,int,int,
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HDC,int,int,int,int,
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BLENDFUNCTION);
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static const AlphaBlend_t pfnAlphaBlend =
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(AlphaBlend_t)wxMSIMG32DLL.GetSymbol(wxT("AlphaBlend"));
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if ( !pfnAlphaBlend )
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return FALSE;
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return pfnAlphaBlend(hdcDest, xDest, yDest, wDest, hDest,
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hdcSrc, xSrc, ySrc, wSrc, hSrc,
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bf);
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}
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// Just as AlphaBlend(), this one lives in msimg32.dll.
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BOOL GradientFill(HDC hdc, PTRIVERTEX pVert, ULONG numVert,
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PVOID pMesh, ULONG numMesh, ULONG mode)
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{
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typedef BOOL
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(WINAPI *GradientFill_t)(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG);
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static const GradientFill_t pfnGradientFill =
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(GradientFill_t)wxMSIMG32DLL.GetSymbol(wxT("GradientFill"));
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if ( !pfnGradientFill )
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return FALSE;
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return pfnGradientFill(hdc, pVert, numVert, pMesh, numMesh, mode);
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}
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#elif defined(USE_STATIC_GDI_FUNCS)
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inline
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DWORD GetLayout(HDC hdc)
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{
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return ::GetLayout(hdc);
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}
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inline
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DWORD SetLayout(HDC hdc, DWORD dwLayout)
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{
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return ::SetLayout(hdc, dwLayout);
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}
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inline
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BOOL AlphaBlend(HDC hdcDest, int xDest, int yDest, int wDest, int hDest,
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HDC hdcSrc, int xSrc, int ySrc, int wSrc, int hSrc,
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BLENDFUNCTION bf)
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{
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return ::AlphaBlend(hdcDest, xDest, yDest, wDest, hDest,
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hdcSrc, xSrc, ySrc, wSrc, hSrc,
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bf);
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}
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inline
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BOOL GradientFill(HDC hdc, PTRIVERTEX pVert, ULONG numVert,
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PVOID pMesh, ULONG numMesh, ULONG mode)
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{
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return ::GradientFill(hdc, pVert, numVert, pMesh, numMesh, mode);
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}
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#else // Can't use the functions neither statically nor dynamically.
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inline
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DWORD GetLayout(HDC WXUNUSED(hdc))
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{
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return GDI_ERROR;
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}
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inline
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DWORD SetLayout(HDC WXUNUSED(hdc), DWORD WXUNUSED(dwLayout))
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{
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return GDI_ERROR;
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}
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inline
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BOOL AlphaBlend(HDC,int,int,int,int,
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HDC,int,int,int,int,
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BLENDFUNCTION)
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{
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return FALSE;
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}
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inline
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BOOL GradientFill(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG)
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{
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return FALSE;
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}
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#endif // USE_DYNAMIC_GDI_FUNCS/USE_STATIC_GDI_FUNCS
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} // namespace wxDynLoadWrappers
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// call AlphaBlend() to blit contents of hdcSrc to dcDst using alpha
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//
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// NB: bmpSrc is the bitmap selected in hdcSrc, it is not really needed
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// to pass it to this function but as we already have it at the point
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// of call anyhow we do
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//
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// return true if we could draw the bitmap in one way or the other, false
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// otherwise
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static bool AlphaBlt(wxMSWDCImpl* dcSrc,
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int x, int y, int dstWidth, int dstHeight,
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int srcX, int srcY,
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int srcWidth, int srcHeight,
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HDC hdcSrc,
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const wxBitmap& bmpSrc);
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namespace wxMSWImpl
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{
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// Create a compatible HDC and copy the layout of the source DC to it. This is
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// necessary in order to draw bitmaps (which are usually blitted from a
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// temporary compatible memory DC to the real target DC) using the same layout.
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HDC CreateCompatibleDCWithLayout(HDC hdc);
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} // namespace wxMSWImpl
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// instead of duplicating the same code which sets and then restores text
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// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes,
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// encapsulate this in a small helper class
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// wxBrushAttrsSetter: changes the text colours in the ctor if required and
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// restores them in the dtor
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class wxBrushAttrsSetter : private wxBkModeChanger,
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private wxTextColoursChanger
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{
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public:
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wxBrushAttrsSetter(wxMSWDCImpl& dc);
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private:
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wxDECLARE_NO_COPY_CLASS(wxBrushAttrsSetter);
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};
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#ifdef __WXWINCE__
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#define SET_STRETCH_BLT_MODE(hdc)
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#else // !__WXWINCE__
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// this class sets the stretch blit mode to COLORONCOLOR during its lifetime
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//
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// don't use it directly, use SET_STRETCH_BLT_MODE() macro instead as it
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// expands to nothing under WinCE which doesn't have SetStretchBltMode()
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class StretchBltModeChanger
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{
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public:
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StretchBltModeChanger(HDC hdc)
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: m_hdc(hdc)
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{
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m_modeOld = ::SetStretchBltMode(m_hdc, COLORONCOLOR);
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if ( !m_modeOld )
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{
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wxLogLastError(wxT("SetStretchBltMode"));
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}
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}
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~StretchBltModeChanger()
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{
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if ( !::SetStretchBltMode(m_hdc, m_modeOld) )
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{
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wxLogLastError(wxT("SetStretchBltMode"));
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}
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}
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private:
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const HDC m_hdc;
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int m_modeOld;
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wxDECLARE_NO_COPY_CLASS(StretchBltModeChanger);
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};
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#define SET_STRETCH_BLT_MODE(hdc) \
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StretchBltModeChanger wxMAKE_UNIQUE_NAME(stretchModeChanger)(hdc)
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#endif // __WXWINCE__/!__WXWINCE__
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// ===========================================================================
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// implementation
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// ===========================================================================
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// ----------------------------------------------------------------------------
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// wxBrushAttrsSetter
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// ----------------------------------------------------------------------------
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wxBrushAttrsSetter::wxBrushAttrsSetter(wxMSWDCImpl& dc)
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: wxBkModeChanger(GetHdcOf(dc)),
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wxTextColoursChanger(GetHdcOf(dc))
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{
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const wxBrush& brush = dc.GetBrush();
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if ( brush.IsOk() && brush.GetStyle() == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE )
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{
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// note that Windows convention is opposite to wxWidgets one, this is
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// why text colour becomes the background one and vice versa
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wxTextColoursChanger::Change(dc.GetTextBackground(),
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dc.GetTextForeground());
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wxBkModeChanger::Change(dc.GetBackgroundMode());
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}
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}
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// ----------------------------------------------------------------------------
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// wxDC MSW-specific methods
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// ----------------------------------------------------------------------------
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WXHDC wxDC::GetHDC() const
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{
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wxMSWDCImpl * const impl = wxDynamicCast(GetImpl(), wxMSWDCImpl);
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return impl ? impl->GetHDC() : 0;
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}
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// ---------------------------------------------------------------------------
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// wxMSWDCImpl
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// ---------------------------------------------------------------------------
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wxMSWDCImpl::wxMSWDCImpl( wxDC *owner, WXHDC hDC ) :
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wxDCImpl( owner )
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{
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Init();
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m_hDC = hDC;
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}
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wxMSWDCImpl::~wxMSWDCImpl()
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{
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if ( m_hDC != 0 )
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{
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SelectOldObjects(m_hDC);
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// if we own the HDC, we delete it, otherwise we just release it
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if ( m_bOwnsDC )
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{
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::DeleteDC(GetHdc());
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}
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else // we don't own our HDC
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{
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if (m_window)
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{
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::ReleaseDC(GetHwndOf(m_window), GetHdc());
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}
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else
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{
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// Must have been a wxScreenDC
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::ReleaseDC((HWND) NULL, GetHdc());
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}
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}
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}
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}
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// This will select current objects out of the DC,
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// which is what you have to do before deleting the
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// DC.
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void wxMSWDCImpl::SelectOldObjects(WXHDC dc)
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{
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if (dc)
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{
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if (m_oldBitmap)
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{
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::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
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if (m_selectedBitmap.IsOk())
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{
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m_selectedBitmap.SetSelectedInto(NULL);
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}
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}
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m_oldBitmap = 0;
|
|
if (m_oldPen)
|
|
{
|
|
::SelectObject((HDC) dc, (HPEN) m_oldPen);
|
|
}
|
|
m_oldPen = 0;
|
|
if (m_oldBrush)
|
|
{
|
|
::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
|
|
}
|
|
m_oldBrush = 0;
|
|
if (m_oldFont)
|
|
{
|
|
::SelectObject((HDC) dc, (HFONT) m_oldFont);
|
|
}
|
|
m_oldFont = 0;
|
|
|
|
#if wxUSE_PALETTE
|
|
if (m_oldPalette)
|
|
{
|
|
::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, FALSE);
|
|
}
|
|
m_oldPalette = 0;
|
|
#endif // wxUSE_PALETTE
|
|
}
|
|
|
|
m_brush = wxNullBrush;
|
|
m_pen = wxNullPen;
|
|
#if wxUSE_PALETTE
|
|
m_palette = wxNullPalette;
|
|
#endif // wxUSE_PALETTE
|
|
m_font = wxNullFont;
|
|
m_backgroundBrush = wxNullBrush;
|
|
m_selectedBitmap = wxNullBitmap;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// clipping
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void wxMSWDCImpl::UpdateClipBox()
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
RECT rect;
|
|
::GetClipBox(GetHdc(), &rect);
|
|
|
|
m_clipX1 = (wxCoord) XDEV2LOG(rect.left);
|
|
m_clipY1 = (wxCoord) YDEV2LOG(rect.top);
|
|
m_clipX2 = (wxCoord) XDEV2LOG(rect.right);
|
|
m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
|
|
}
|
|
|
|
void
|
|
wxMSWDCImpl::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
|
|
{
|
|
// check if we should try to retrieve the clipping region possibly not set
|
|
// by our SetClippingRegion() but preset by Windows:this can only happen
|
|
// when we're associated with an existing HDC usign SetHDC(), see there
|
|
if ( m_clipping && !m_clipX1 && !m_clipX2 )
|
|
{
|
|
wxMSWDCImpl *self = wxConstCast(this, wxMSWDCImpl);
|
|
self->UpdateClipBox();
|
|
|
|
if ( !m_clipX1 && !m_clipX2 )
|
|
self->m_clipping = false;
|
|
}
|
|
|
|
wxDCImpl::DoGetClippingBox(x, y, w, h);
|
|
}
|
|
|
|
// common part of DoSetClippingRegion() and DoSetDeviceClippingRegion()
|
|
void wxMSWDCImpl::SetClippingHrgn(WXHRGN hrgn)
|
|
{
|
|
wxCHECK_RET( hrgn, wxT("invalid clipping region") );
|
|
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// note that we combine the new clipping region with the existing one: this
|
|
// is compatible with what the other ports do and is the documented
|
|
// behaviour now (starting with 2.3.3)
|
|
#if defined(__WXWINCE__)
|
|
RECT rectClip;
|
|
if ( !::GetClipBox(GetHdc(), &rectClip) )
|
|
return;
|
|
|
|
// GetClipBox returns logical coordinates, so transform to device
|
|
rectClip.left = LogicalToDeviceX(rectClip.left);
|
|
rectClip.top = LogicalToDeviceY(rectClip.top);
|
|
rectClip.right = LogicalToDeviceX(rectClip.right);
|
|
rectClip.bottom = LogicalToDeviceY(rectClip.bottom);
|
|
|
|
HRGN hrgnDest = ::CreateRectRgn(0, 0, 0, 0);
|
|
HRGN hrgnClipOld = ::CreateRectRgn(rectClip.left, rectClip.top,
|
|
rectClip.right, rectClip.bottom);
|
|
|
|
if ( ::CombineRgn(hrgnDest, hrgnClipOld, (HRGN)hrgn, RGN_AND) != ERROR )
|
|
{
|
|
::SelectClipRgn(GetHdc(), hrgnDest);
|
|
}
|
|
|
|
::DeleteObject(hrgnClipOld);
|
|
::DeleteObject(hrgnDest);
|
|
#else // !WinCE
|
|
if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR )
|
|
{
|
|
wxLogLastError(wxT("ExtSelectClipRgn"));
|
|
|
|
return;
|
|
}
|
|
#endif // WinCE/!WinCE
|
|
|
|
m_clipping = true;
|
|
|
|
UpdateClipBox();
|
|
}
|
|
|
|
void wxMSWDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
|
|
{
|
|
// the region coords are always the device ones, so do the translation
|
|
// manually
|
|
//
|
|
// FIXME: possible +/-1 error here, to check!
|
|
HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x),
|
|
LogicalToDeviceY(y),
|
|
LogicalToDeviceX(x + w),
|
|
LogicalToDeviceY(y + h));
|
|
if ( !hrgn )
|
|
{
|
|
wxLogLastError(wxT("CreateRectRgn"));
|
|
}
|
|
else
|
|
{
|
|
SetClippingHrgn((WXHRGN)hrgn);
|
|
|
|
::DeleteObject(hrgn);
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::DoSetDeviceClippingRegion(const wxRegion& region)
|
|
{
|
|
SetClippingHrgn(region.GetHRGN());
|
|
}
|
|
|
|
void wxMSWDCImpl::DestroyClippingRegion()
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if (m_clipping && m_hDC)
|
|
{
|
|
#if 1
|
|
// On a PocketPC device (not necessarily emulator), resetting
|
|
// the clip region as per the old method causes bad display
|
|
// problems. In fact setting a null region is probably OK
|
|
// on desktop WIN32 also, since the WIN32 docs imply that the user
|
|
// clipping region is independent from the paint clipping region.
|
|
::SelectClipRgn(GetHdc(), 0);
|
|
#else
|
|
// TODO: this should restore the previous clipping region,
|
|
// so that OnPaint processing works correctly, and the update
|
|
// clipping region doesn't get destroyed after the first
|
|
// DestroyClippingRegion.
|
|
HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
|
|
::SelectClipRgn(GetHdc(), rgn);
|
|
::DeleteObject(rgn);
|
|
#endif
|
|
}
|
|
|
|
wxDCImpl::DestroyClippingRegion();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// query capabilities
|
|
// ---------------------------------------------------------------------------
|
|
|
|
bool wxMSWDCImpl::CanDrawBitmap() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool wxMSWDCImpl::CanGetTextExtent() const
|
|
{
|
|
#ifdef __WXMICROWIN__
|
|
// TODO Extend MicroWindows' GetDeviceCaps function
|
|
return true;
|
|
#else
|
|
// What sort of display is it?
|
|
int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
|
|
|
|
return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
|
|
#endif
|
|
}
|
|
|
|
int wxMSWDCImpl::GetDepth() const
|
|
{
|
|
WXMICROWIN_CHECK_HDC_RET(16)
|
|
|
|
return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// drawing
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void wxMSWDCImpl::Clear()
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
RECT rect;
|
|
if (m_window)
|
|
{
|
|
GetClientRect((HWND) m_window->GetHWND(), &rect);
|
|
}
|
|
else
|
|
{
|
|
// No, I think we should simply ignore this if printing on e.g.
|
|
// a printer DC.
|
|
// wxCHECK_RET( m_selectedBitmap.IsOk(), wxT("this DC can't be cleared") );
|
|
if (!m_selectedBitmap.IsOk())
|
|
return;
|
|
|
|
rect.left = rect.top = 0;
|
|
rect.right = m_selectedBitmap.GetWidth();
|
|
rect.bottom = m_selectedBitmap.GetHeight();
|
|
}
|
|
|
|
::OffsetRect(&rect, -m_deviceOriginX, -m_deviceOriginY);
|
|
|
|
#ifndef __WXWINCE__
|
|
(void) ::SetMapMode(GetHdc(), MM_TEXT);
|
|
#endif
|
|
|
|
DWORD colour = ::GetBkColor(GetHdc());
|
|
HBRUSH brush = ::CreateSolidBrush(colour);
|
|
::FillRect(GetHdc(), &rect, brush);
|
|
::DeleteObject(brush);
|
|
|
|
RealizeScaleAndOrigin();
|
|
}
|
|
|
|
bool wxMSWDCImpl::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x),
|
|
wxCoord WXUNUSED_IN_WINCE(y),
|
|
const wxColour& WXUNUSED_IN_WINCE(col),
|
|
wxFloodFillStyle WXUNUSED_IN_WINCE(style))
|
|
{
|
|
#ifdef __WXWINCE__
|
|
return false;
|
|
#else
|
|
WXMICROWIN_CHECK_HDC_RET(false)
|
|
|
|
bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
|
|
col.GetPixel(),
|
|
style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
|
|
: FLOODFILLBORDER) ) ;
|
|
if (!success)
|
|
{
|
|
// quoting from the MSDN docs:
|
|
//
|
|
// Following are some of the reasons this function might fail:
|
|
//
|
|
// * The filling could not be completed.
|
|
// * The specified point has the boundary color specified by the
|
|
// crColor parameter (if FLOODFILLBORDER was requested).
|
|
// * The specified point does not have the color specified by
|
|
// crColor (if FLOODFILLSURFACE was requested)
|
|
// * The point is outside the clipping region that is, it is not
|
|
// visible on the device.
|
|
//
|
|
wxLogLastError(wxT("ExtFloodFill"));
|
|
}
|
|
|
|
CalcBoundingBox(x, y);
|
|
|
|
return success;
|
|
#endif
|
|
}
|
|
|
|
bool wxMSWDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
|
|
{
|
|
WXMICROWIN_CHECK_HDC_RET(false)
|
|
|
|
wxCHECK_MSG( col, false, wxT("NULL colour parameter in wxMSWDCImpl::GetPixel") );
|
|
|
|
// get the color of the pixel
|
|
COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
|
|
|
|
wxRGBToColour(*col, pixelcolor);
|
|
|
|
return true;
|
|
}
|
|
|
|
void wxMSWDCImpl::DoCrossHair(wxCoord x, wxCoord y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxCoord x1 = x-VIEWPORT_EXTENT;
|
|
wxCoord y1 = y-VIEWPORT_EXTENT;
|
|
wxCoord x2 = x+VIEWPORT_EXTENT;
|
|
wxCoord y2 = y+VIEWPORT_EXTENT;
|
|
|
|
wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y));
|
|
wxDrawLine(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), XLOG2DEV(x), YLOG2DEV(y2));
|
|
|
|
CalcBoundingBox(x1, y1);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2));
|
|
|
|
CalcBoundingBox(x1, y1);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
|
|
// and ending at (x2, y2)
|
|
void wxMSWDCImpl::DoDrawArc(wxCoord x1, wxCoord y1,
|
|
wxCoord x2, wxCoord y2,
|
|
wxCoord xc, wxCoord yc)
|
|
{
|
|
double dx = xc - x1;
|
|
double dy = yc - y1;
|
|
wxCoord r = (wxCoord)sqrt(dx*dx + dy*dy);
|
|
|
|
|
|
#ifdef __WXWINCE__
|
|
// Slower emulation since WinCE doesn't support Pie and Arc
|
|
double sa = acos((x1-xc)/r)/M_PI*180; // between 0 and 180
|
|
if( y1>yc )
|
|
sa = -sa; // below center
|
|
double ea = atan2(yc-y2, x2-xc)/M_PI*180;
|
|
DoDrawEllipticArcRot( xc-r, yc-r, 2*r, 2*r, sa, ea );
|
|
#else
|
|
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
// treat the special case of full circle separately
|
|
if ( x1 == x2 && y1 == y2 )
|
|
{
|
|
GetOwner()->DrawEllipse(xc - r, yc - r, 2*r, 2*r);
|
|
return;
|
|
}
|
|
|
|
wxCoord xx1 = XLOG2DEV(x1);
|
|
wxCoord yy1 = YLOG2DEV(y1);
|
|
wxCoord xx2 = XLOG2DEV(x2);
|
|
wxCoord yy2 = YLOG2DEV(y2);
|
|
wxCoord xxc = XLOG2DEV(xc);
|
|
wxCoord yyc = YLOG2DEV(yc);
|
|
dx = xxc - xx1;
|
|
dy = yyc - yy1;
|
|
wxCoord ray = (wxCoord)sqrt(dx*dx + dy*dy);
|
|
|
|
wxCoord xxx1 = (wxCoord) (xxc-ray);
|
|
wxCoord yyy1 = (wxCoord) (yyc-ray);
|
|
wxCoord xxx2 = (wxCoord) (xxc+ray);
|
|
wxCoord yyy2 = (wxCoord) (yyc+ray);
|
|
|
|
if ( m_brush.IsNonTransparent() )
|
|
{
|
|
// Have to add 1 to bottom-right corner of rectangle
|
|
// to make semi-circles look right (crooked line otherwise).
|
|
// Unfortunately this is not a reliable method, depends
|
|
// on the size of shape.
|
|
// TODO: figure out why this happens!
|
|
Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2);
|
|
}
|
|
else
|
|
{
|
|
Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2);
|
|
}
|
|
|
|
CalcBoundingBox(xc - r, yc - r);
|
|
CalcBoundingBox(xc + r, yc + r);
|
|
#endif
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1,
|
|
wxCoord width, wxCoord height)
|
|
{
|
|
// cases when we don't have DrawFrameControl()
|
|
#if defined(__SYMANTEC__) || defined(__WXMICROWIN__)
|
|
return wxDCBase::DoDrawCheckMark(x1, y1, width, height);
|
|
#else // normal case
|
|
wxCoord x2 = x1 + width,
|
|
y2 = y1 + height;
|
|
|
|
RECT rect;
|
|
rect.left = x1;
|
|
rect.top = y1;
|
|
rect.right = x2;
|
|
rect.bottom = y2;
|
|
|
|
#ifdef __WXWINCE__
|
|
DrawFrameControl(GetHdc(), &rect, DFC_BUTTON, DFCS_BUTTONCHECK | DFCS_CHECKED);
|
|
#else
|
|
DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK);
|
|
#endif
|
|
|
|
CalcBoundingBox(x1, y1);
|
|
CalcBoundingBox(x2, y2);
|
|
#endif // Microwin/Normal
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawPoint(wxCoord x, wxCoord y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
COLORREF color = 0x00ffffff;
|
|
if (m_pen.IsOk())
|
|
{
|
|
color = m_pen.GetColour().GetPixel();
|
|
}
|
|
|
|
SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
|
|
|
|
CalcBoundingBox(x, y);
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawPolygon(int n,
|
|
const wxPoint points[],
|
|
wxCoord xoffset,
|
|
wxCoord yoffset,
|
|
wxPolygonFillMode WXUNUSED_IN_WINCE(fillStyle))
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
// Do things less efficiently if we have offsets
|
|
if (xoffset != 0 || yoffset != 0)
|
|
{
|
|
POINT *cpoints = new POINT[n];
|
|
int i;
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
cpoints[i].x = (int)(points[i].x + xoffset);
|
|
cpoints[i].y = (int)(points[i].y + yoffset);
|
|
|
|
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
|
|
}
|
|
#ifndef __WXWINCE__
|
|
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
|
#endif
|
|
(void)Polygon(GetHdc(), cpoints, n);
|
|
#ifndef __WXWINCE__
|
|
SetPolyFillMode(GetHdc(),prev);
|
|
#endif
|
|
delete[] cpoints;
|
|
}
|
|
else
|
|
{
|
|
int i;
|
|
for (i = 0; i < n; i++)
|
|
CalcBoundingBox(points[i].x, points[i].y);
|
|
|
|
#ifndef __WXWINCE__
|
|
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
|
#endif
|
|
(void)Polygon(GetHdc(), (POINT*) points, n);
|
|
#ifndef __WXWINCE__
|
|
SetPolyFillMode(GetHdc(),prev);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void
|
|
wxMSWDCImpl::DoDrawPolyPolygon(int n,
|
|
const int count[],
|
|
const wxPoint points[],
|
|
wxCoord xoffset,
|
|
wxCoord yoffset,
|
|
wxPolygonFillMode fillStyle)
|
|
{
|
|
#ifdef __WXWINCE__
|
|
wxDCImpl::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle);
|
|
#else
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
int i, cnt;
|
|
for (i = cnt = 0; i < n; i++)
|
|
cnt += count[i];
|
|
|
|
// Do things less efficiently if we have offsets
|
|
if (xoffset != 0 || yoffset != 0)
|
|
{
|
|
POINT *cpoints = new POINT[cnt];
|
|
for (i = 0; i < cnt; i++)
|
|
{
|
|
cpoints[i].x = (int)(points[i].x + xoffset);
|
|
cpoints[i].y = (int)(points[i].y + yoffset);
|
|
|
|
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
|
|
}
|
|
#ifndef __WXWINCE__
|
|
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
|
#endif
|
|
(void)PolyPolygon(GetHdc(), cpoints, count, n);
|
|
#ifndef __WXWINCE__
|
|
SetPolyFillMode(GetHdc(),prev);
|
|
#endif
|
|
delete[] cpoints;
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; i < cnt; i++)
|
|
CalcBoundingBox(points[i].x, points[i].y);
|
|
|
|
#ifndef __WXWINCE__
|
|
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
|
#endif
|
|
(void)PolyPolygon(GetHdc(), (POINT*) points, count, n);
|
|
#ifndef __WXWINCE__
|
|
SetPolyFillMode(GetHdc(),prev);
|
|
#endif
|
|
}
|
|
#endif
|
|
// __WXWINCE__
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawLines(int n, const wxPoint points[], wxCoord xoffset, wxCoord yoffset)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// Do things less efficiently if we have offsets
|
|
if (xoffset != 0 || yoffset != 0)
|
|
{
|
|
POINT *cpoints = new POINT[n];
|
|
int i;
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
cpoints[i].x = (int)(points[i].x + xoffset);
|
|
cpoints[i].y = (int)(points[i].y + yoffset);
|
|
|
|
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
|
|
}
|
|
(void)Polyline(GetHdc(), cpoints, n);
|
|
delete[] cpoints;
|
|
}
|
|
else
|
|
{
|
|
int i;
|
|
for (i = 0; i < n; i++)
|
|
CalcBoundingBox(points[i].x, points[i].y);
|
|
|
|
(void)Polyline(GetHdc(), (POINT*) points, n);
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
wxCoord x2 = x + width;
|
|
wxCoord y2 = y + height;
|
|
|
|
wxCoord x1dev = XLOG2DEV(x),
|
|
y1dev = YLOG2DEV(y),
|
|
x2dev = XLOG2DEV(x2),
|
|
y2dev = YLOG2DEV(y2);
|
|
|
|
// Windows (but not Windows CE) draws the filled rectangles without outline
|
|
// (i.e. drawn with a transparent pen) one pixel smaller in both directions
|
|
// and we want them to have the same size regardless of which pen is used
|
|
#ifndef __WXWINCE__
|
|
if ( m_pen.IsTransparent() )
|
|
{
|
|
// Right edge to be extended is "displayed right edge"
|
|
// and hence its device coordinates depend
|
|
// on layout direction and can be either x1 or x2.
|
|
if ( GetLayoutDirection() == wxLayout_RightToLeft )
|
|
x1dev--;
|
|
else
|
|
x2dev++;
|
|
y2dev++;
|
|
}
|
|
#endif // !__WXWINCE__
|
|
|
|
(void)Rectangle(GetHdc(), x1dev, y1dev, x2dev, y2dev);
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
// Now, a negative radius value is interpreted to mean
|
|
// 'the proportion of the smallest X or Y dimension'
|
|
|
|
if (radius < 0.0)
|
|
{
|
|
double smallest = (width < height) ? width : height;
|
|
radius = (- radius * smallest);
|
|
}
|
|
|
|
wxCoord x2 = (x+width);
|
|
wxCoord y2 = (y+height);
|
|
|
|
// Windows draws the filled rectangles without outline (i.e. drawn with a
|
|
// transparent pen) one pixel smaller in both directions and we want them
|
|
// to have the same size regardless of which pen is used - adjust
|
|
if ( m_pen.IsTransparent() )
|
|
{
|
|
x2++;
|
|
y2++;
|
|
}
|
|
|
|
(void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
|
|
YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius)));
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
// +1 below makes the ellipse more similar to other platforms.
|
|
// In particular, DoDrawEllipse(x,y,1,1) should draw one point.
|
|
wxCoord x2 = x + width + 1;
|
|
wxCoord y2 = y + height + 1;
|
|
|
|
// Problem: Windows GDI Ellipse() with x2-x == y2-y == 3 and transparent
|
|
// pen doesn't draw anything. Should we provide a workaround?
|
|
|
|
::Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
#if wxUSE_SPLINES && !defined(__WXWINCE__)
|
|
void wxMSWDCImpl::DoDrawSpline(const wxPointList *points)
|
|
{
|
|
// quadratic b-spline to cubic bezier spline conversion
|
|
//
|
|
// quadratic spline with control points P0,P1,P2
|
|
// P(s) = P0*(1-s)^2 + P1*2*(1-s)*s + P2*s^2
|
|
//
|
|
// bezier spline with control points B0,B1,B2,B3
|
|
// B(s) = B0*(1-s)^3 + B1*3*(1-s)^2*s + B2*3*(1-s)*s^2 + B3*s^3
|
|
//
|
|
// control points of bezier spline calculated from b-spline
|
|
// B0 = P0
|
|
// B1 = (2*P1 + P0)/3
|
|
// B2 = (2*P1 + P2)/3
|
|
// B3 = P2
|
|
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxASSERT_MSG( points, wxT("NULL pointer to spline points?") );
|
|
|
|
const size_t n_points = points->GetCount();
|
|
wxASSERT_MSG( n_points > 2 , wxT("incomplete list of spline points?") );
|
|
|
|
const size_t n_bezier_points = n_points * 3 + 1;
|
|
POINT *lppt = (POINT *)malloc(n_bezier_points*sizeof(POINT));
|
|
size_t bezier_pos = 0;
|
|
wxCoord x1, y1, x2, y2, cx1, cy1, cx4, cy4;
|
|
|
|
wxPointList::compatibility_iterator node = points->GetFirst();
|
|
wxPoint *p = node->GetData();
|
|
lppt[ bezier_pos ].x = x1 = p->x;
|
|
lppt[ bezier_pos ].y = y1 = p->y;
|
|
bezier_pos++;
|
|
lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
|
|
bezier_pos++;
|
|
|
|
node = node->GetNext();
|
|
p = node->GetData();
|
|
|
|
x2 = p->x;
|
|
y2 = p->y;
|
|
cx1 = ( x1 + x2 ) / 2;
|
|
cy1 = ( y1 + y2 ) / 2;
|
|
lppt[ bezier_pos ].x = XLOG2DEV(cx1);
|
|
lppt[ bezier_pos ].y = YLOG2DEV(cy1);
|
|
bezier_pos++;
|
|
lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
|
|
bezier_pos++;
|
|
|
|
#if !wxUSE_STD_CONTAINERS
|
|
while ((node = node->GetNext()) != NULL)
|
|
#else
|
|
while ((node = node->GetNext()))
|
|
#endif // !wxUSE_STD_CONTAINERS
|
|
{
|
|
p = (wxPoint *)node->GetData();
|
|
x1 = x2;
|
|
y1 = y2;
|
|
x2 = p->x;
|
|
y2 = p->y;
|
|
cx4 = (x1 + x2) / 2;
|
|
cy4 = (y1 + y2) / 2;
|
|
// B0 is B3 of previous segment
|
|
// B1:
|
|
lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx1)/3);
|
|
lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy1)/3);
|
|
bezier_pos++;
|
|
// B2:
|
|
lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx4)/3);
|
|
lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy4)/3);
|
|
bezier_pos++;
|
|
// B3:
|
|
lppt[ bezier_pos ].x = XLOG2DEV(cx4);
|
|
lppt[ bezier_pos ].y = YLOG2DEV(cy4);
|
|
bezier_pos++;
|
|
cx1 = cx4;
|
|
cy1 = cy4;
|
|
}
|
|
|
|
lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
|
|
bezier_pos++;
|
|
lppt[ bezier_pos ].x = XLOG2DEV(x2);
|
|
lppt[ bezier_pos ].y = YLOG2DEV(y2);
|
|
bezier_pos++;
|
|
lppt[ bezier_pos ] = lppt[ bezier_pos-1 ];
|
|
bezier_pos++;
|
|
|
|
::PolyBezier( GetHdc(), lppt, bezier_pos );
|
|
|
|
free(lppt);
|
|
}
|
|
#endif // wxUSE_SPLINES
|
|
|
|
// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
|
|
void wxMSWDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
|
|
{
|
|
#ifdef __WXWINCE__
|
|
DoDrawEllipticArcRot( x, y, w, h, sa, ea );
|
|
#else
|
|
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
|
|
|
wxCoord x2 = x + w;
|
|
wxCoord y2 = y + h;
|
|
|
|
int rx1 = XLOG2DEV(x+w/2);
|
|
int ry1 = YLOG2DEV(y+h/2);
|
|
int rx2 = rx1;
|
|
int ry2 = ry1;
|
|
|
|
sa = wxDegToRad(sa);
|
|
ea = wxDegToRad(ea);
|
|
|
|
rx1 += (int)(100.0 * abs(w) * cos(sa));
|
|
ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
|
|
rx2 += (int)(100.0 * abs(w) * cos(ea));
|
|
ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));
|
|
|
|
// draw pie with NULL_PEN first and then outline otherwise a line is
|
|
// drawn from the start and end points to the centre
|
|
HPEN hpenOld = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
|
|
if (m_signY > 0)
|
|
{
|
|
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
|
|
rx1, ry1, rx2, ry2);
|
|
}
|
|
else
|
|
{
|
|
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
|
|
rx1, ry1-1, rx2, ry2-1);
|
|
}
|
|
|
|
::SelectObject(GetHdc(), hpenOld);
|
|
|
|
(void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
|
|
rx1, ry1, rx2, ry2);
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x2, y2);
|
|
#endif
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxCHECK_RET( icon.IsOk(), wxT("invalid icon in DrawIcon") );
|
|
|
|
// Check if we are printing: notice that it's not enough to just check for
|
|
// DT_RASPRINTER as this is also the kind of print preview HDC, but its
|
|
// type is OBJ_ENHMETADC while the type of the "real" printer DC is OBJ_DC.
|
|
if ( ::GetDeviceCaps(GetHdc(), TECHNOLOGY) == DT_RASPRINTER &&
|
|
::GetObjectType(GetHdc()) == OBJ_DC )
|
|
{
|
|
// DrawIcon API doesn't work for printer DCs (printer DC is write-only
|
|
// and DrawIcon requires DC supporting SRCINVERT ROP).
|
|
// We need to convert icon to bitmap and use alternative API calls.
|
|
wxBitmap bmp(icon);
|
|
DoDrawBitmap(bmp, x, y, !bmp.HasAlpha() /* use mask */);
|
|
}
|
|
else
|
|
{
|
|
#ifdef __WIN32__
|
|
::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL);
|
|
#else
|
|
::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon));
|
|
#endif
|
|
}
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight());
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxCHECK_RET( bmp.IsOk(), wxT("invalid bitmap in wxMSWDCImpl::DrawBitmap") );
|
|
|
|
int width = bmp.GetWidth(),
|
|
height = bmp.GetHeight();
|
|
|
|
HBITMAP hbmpMask = 0;
|
|
|
|
#if wxUSE_PALETTE
|
|
HPALETTE oldPal = 0;
|
|
#endif // wxUSE_PALETTE
|
|
|
|
if ( bmp.HasAlpha() )
|
|
{
|
|
MemoryHDC hdcMem;
|
|
SelectInHDC select(hdcMem, GetHbitmapOf(bmp));
|
|
|
|
if ( AlphaBlt(this, x, y, width, height, 0, 0, width, height, hdcMem, bmp) )
|
|
{
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + bmp.GetWidth(), y + bmp.GetHeight());
|
|
return;
|
|
}
|
|
}
|
|
|
|
SET_STRETCH_BLT_MODE(GetHdc());
|
|
|
|
if ( useMask )
|
|
{
|
|
wxMask *mask = bmp.GetMask();
|
|
if ( mask )
|
|
hbmpMask = (HBITMAP)mask->GetMaskBitmap();
|
|
|
|
if ( !hbmpMask )
|
|
{
|
|
// don't give assert here because this would break existing
|
|
// programs - just silently ignore useMask parameter
|
|
useMask = false;
|
|
}
|
|
}
|
|
if ( useMask )
|
|
{
|
|
#ifdef __WIN32__
|
|
// use MaskBlt() with ROP which doesn't do anything to dst in the mask
|
|
// points
|
|
bool ok = false;
|
|
|
|
#if wxUSE_SYSTEM_OPTIONS
|
|
// On some systems, MaskBlt succeeds yet is much much slower
|
|
// than the wxWidgets fall-back implementation. So we need
|
|
// to be able to switch this on and off at runtime.
|
|
//
|
|
// NB: don't query the value of the option every time but do it only
|
|
// once as otherwise it can have real (and bad) performance
|
|
// implications (see #11172)
|
|
static bool
|
|
s_maskBltAllowed = wxSystemOptions::GetOptionInt("no-maskblt") == 0;
|
|
if ( s_maskBltAllowed )
|
|
#endif // wxUSE_SYSTEM_OPTIONS
|
|
{
|
|
HDC cdc = GetHdc();
|
|
HDC hdcMem = wxMSWImpl::CreateCompatibleDCWithLayout(cdc);
|
|
HGDIOBJ hOldBitmap = ::SelectObject(hdcMem, GetHbitmapOf(bmp));
|
|
#if wxUSE_PALETTE
|
|
wxPalette *pal = bmp.GetPalette();
|
|
if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
|
|
{
|
|
oldPal = ::SelectPalette(hdcMem, GetHpaletteOf(*pal), FALSE);
|
|
::RealizePalette(hdcMem);
|
|
}
|
|
#endif // wxUSE_PALETTE
|
|
|
|
ok = ::MaskBlt(cdc, x, y, width, height,
|
|
hdcMem, 0, 0,
|
|
hbmpMask, 0, 0,
|
|
MAKEROP4(SRCCOPY, DSTCOPY)) != 0;
|
|
|
|
#if wxUSE_PALETTE
|
|
if (oldPal)
|
|
::SelectPalette(hdcMem, oldPal, FALSE);
|
|
#endif // wxUSE_PALETTE
|
|
|
|
::SelectObject(hdcMem, hOldBitmap);
|
|
::DeleteDC(hdcMem);
|
|
}
|
|
|
|
if ( !ok )
|
|
#endif // Win32
|
|
{
|
|
// Rather than reproduce wxMSWDCImpl::Blit, let's do it at the wxWin API
|
|
// level
|
|
wxMemoryDC memDC;
|
|
|
|
memDC.SetLayoutDirection(GetLayoutDirection());
|
|
memDC.SelectObjectAsSource(bmp);
|
|
|
|
GetOwner()->Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
|
|
}
|
|
}
|
|
else // no mask, just use BitBlt()
|
|
{
|
|
HDC cdc = GetHdc();
|
|
HDC memdc = wxMSWImpl::CreateCompatibleDCWithLayout( cdc );
|
|
HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
|
|
|
|
wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
|
|
|
|
wxTextColoursChanger textCol(GetHdc(), *this);
|
|
|
|
#if wxUSE_PALETTE
|
|
wxPalette *pal = bmp.GetPalette();
|
|
if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 )
|
|
{
|
|
oldPal = ::SelectPalette(memdc, GetHpaletteOf(*pal), FALSE);
|
|
::RealizePalette(memdc);
|
|
}
|
|
#endif // wxUSE_PALETTE
|
|
|
|
HGDIOBJ hOldBitmap = ::SelectObject( memdc, hbitmap );
|
|
::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY);
|
|
|
|
#if wxUSE_PALETTE
|
|
if (oldPal)
|
|
::SelectPalette(memdc, oldPal, FALSE);
|
|
#endif // wxUSE_PALETTE
|
|
|
|
::SelectObject( memdc, hOldBitmap );
|
|
::DeleteDC( memdc );
|
|
}
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + bmp.GetWidth(), y + bmp.GetHeight());
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
|
|
{
|
|
// For compatibility with other ports (notably wxGTK) and because it's
|
|
// genuinely useful, we allow passing multiline strings to DrawText().
|
|
// However there is no native MSW function to draw them directly so we
|
|
// instead reuse the generic DrawLabel() method to render them. Of course,
|
|
// DrawLabel() itself will call back to us but with single line strings
|
|
// only so there won't be any infinite recursion here.
|
|
if ( text.find('\n') != wxString::npos )
|
|
{
|
|
GetOwner()->DrawLabel(text, wxRect(x, y, 0, 0));
|
|
return;
|
|
}
|
|
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// prepare for drawing the text
|
|
wxTextColoursChanger textCol(GetHdc(), *this);
|
|
|
|
wxBkModeChanger bkMode(GetHdc(), m_backgroundMode);
|
|
|
|
DrawAnyText(text, x, y);
|
|
|
|
// update the bounding box
|
|
CalcBoundingBox(x, y);
|
|
|
|
wxCoord w, h;
|
|
GetOwner()->GetTextExtent(text, &w, &h);
|
|
CalcBoundingBox(x + w, y + h);
|
|
}
|
|
|
|
void wxMSWDCImpl::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
|
|
{
|
|
if ( ::ExtTextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), 0, NULL,
|
|
text.c_str(), text.length(), NULL) == 0 )
|
|
{
|
|
wxLogLastError(wxT("TextOut"));
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::DoDrawRotatedText(const wxString& text,
|
|
wxCoord x, wxCoord y,
|
|
double angle)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// we test that we have some font because otherwise we should still use the
|
|
// "else" part below to avoid that DrawRotatedText(angle = 180) and
|
|
// DrawRotatedText(angle = 0) use different fonts (we can't use the default
|
|
// font for drawing rotated fonts unfortunately)
|
|
if ( (angle == 0.0) && m_font.IsOk() )
|
|
{
|
|
DoDrawText(text, x, y);
|
|
|
|
// Bounding box already updated by DoDrawText(), no need to do it again.
|
|
return;
|
|
}
|
|
|
|
#ifndef __WXMICROWIN__
|
|
// NB: don't take DEFAULT_GUI_FONT (a.k.a. wxSYS_DEFAULT_GUI_FONT)
|
|
// because it's not TrueType and so can't have non zero
|
|
// orientation/escapement under Win9x
|
|
wxFont font = m_font.IsOk() ? m_font : *wxSWISS_FONT;
|
|
LOGFONT lf;
|
|
if ( ::GetObject(GetHfontOf(font), sizeof(lf), &lf) == 0 )
|
|
{
|
|
wxLogLastError(wxT("GetObject(hfont)"));
|
|
}
|
|
|
|
// GDI wants the angle in tenth of degree
|
|
long angle10 = (long)(angle * 10);
|
|
lf.lfEscapement = angle10;
|
|
lf.lfOrientation = angle10;
|
|
|
|
AutoHFONT hfont(lf);
|
|
if ( !hfont )
|
|
{
|
|
wxLogLastError(wxT("CreateFont"));
|
|
return;
|
|
}
|
|
|
|
SelectInHDC selRotatedFont(GetHdc(), hfont);
|
|
|
|
// Get extent of whole text.
|
|
wxCoord w, h, heightLine;
|
|
GetOwner()->GetMultiLineTextExtent(text, &w, &h, &heightLine);
|
|
|
|
// Prepare for drawing the text
|
|
wxTextColoursChanger textCol(GetHdc(), *this);
|
|
wxBkModeChanger bkMode(GetHdc(), m_backgroundMode);
|
|
|
|
// Compute the shift for the origin of the next line.
|
|
const double rad = wxDegToRad(angle);
|
|
const double dx = heightLine * sin(rad);
|
|
const double dy = heightLine * cos(rad);
|
|
|
|
// Draw all text line by line
|
|
const wxArrayString lines = wxSplit(text, '\n', '\0');
|
|
for ( size_t lineNum = 0; lineNum < lines.size(); lineNum++ )
|
|
{
|
|
// Calculate origin for each line to avoid accumulation of
|
|
// rounding errors.
|
|
DrawAnyText(lines[lineNum],
|
|
x + wxRound(lineNum*dx),
|
|
y + wxRound(lineNum*dy));
|
|
}
|
|
|
|
|
|
// call the bounding box by adding all four vertices of the rectangle
|
|
// containing the text to it (simpler and probably not slower than
|
|
// determining which of them is really topmost/leftmost/...)
|
|
|
|
// "upper left" and "upper right"
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
|
|
|
|
// "bottom left" and "bottom right"
|
|
x += (wxCoord)(h*sin(rad));
|
|
y += (wxCoord)(h*cos(rad));
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
|
|
#endif
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// set GDI objects
|
|
// ---------------------------------------------------------------------------
|
|
|
|
#if wxUSE_PALETTE
|
|
|
|
void wxMSWDCImpl::DoSelectPalette(bool realize)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// Set the old object temporarily, in case the assignment deletes an object
|
|
// that's not yet selected out.
|
|
if (m_oldPalette)
|
|
{
|
|
::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, FALSE);
|
|
m_oldPalette = 0;
|
|
}
|
|
|
|
if ( m_palette.IsOk() )
|
|
{
|
|
HPALETTE oldPal = ::SelectPalette(GetHdc(),
|
|
GetHpaletteOf(m_palette),
|
|
false);
|
|
if (!m_oldPalette)
|
|
m_oldPalette = (WXHPALETTE) oldPal;
|
|
|
|
if (realize)
|
|
::RealizePalette(GetHdc());
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::SetPalette(const wxPalette& palette)
|
|
{
|
|
if ( palette.IsOk() )
|
|
{
|
|
m_palette = palette;
|
|
DoSelectPalette(true);
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::InitializePalette()
|
|
{
|
|
if ( wxDisplayDepth() <= 8 )
|
|
{
|
|
// look for any window or parent that has a custom palette. If any has
|
|
// one then we need to use it in drawing operations
|
|
wxWindow *win = m_window->GetAncestorWithCustomPalette();
|
|
|
|
m_hasCustomPalette = win && win->HasCustomPalette();
|
|
if ( m_hasCustomPalette )
|
|
{
|
|
m_palette = win->GetPalette();
|
|
|
|
// turn on MSW translation for this palette
|
|
DoSelectPalette();
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // wxUSE_PALETTE
|
|
|
|
void wxMSWDCImpl::SetFont(const wxFont& font)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( font == m_font )
|
|
return;
|
|
|
|
if ( font.IsOk() )
|
|
{
|
|
HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font));
|
|
if ( hfont == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(font)"));
|
|
}
|
|
else // selected ok
|
|
{
|
|
if ( !m_oldFont )
|
|
m_oldFont = (WXHFONT)hfont;
|
|
|
|
m_font = font;
|
|
}
|
|
}
|
|
else // invalid font, reset the current font
|
|
{
|
|
if ( m_oldFont )
|
|
{
|
|
if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(old font)"));
|
|
}
|
|
|
|
m_oldFont = 0;
|
|
}
|
|
|
|
m_font = wxNullFont;
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::SetPen(const wxPen& pen)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( pen == m_pen )
|
|
return;
|
|
|
|
if ( pen.IsOk() )
|
|
{
|
|
HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen));
|
|
if ( hpen == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(pen)"));
|
|
}
|
|
else // selected ok
|
|
{
|
|
if ( !m_oldPen )
|
|
m_oldPen = (WXHPEN)hpen;
|
|
|
|
m_pen = pen;
|
|
}
|
|
}
|
|
else // invalid pen, reset the current pen
|
|
{
|
|
if ( m_oldPen )
|
|
{
|
|
if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(old pen)"));
|
|
}
|
|
|
|
m_oldPen = 0;
|
|
}
|
|
|
|
m_pen = wxNullPen;
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::SetBrush(const wxBrush& brush)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( brush == m_brush )
|
|
return;
|
|
|
|
if ( brush.IsOk() )
|
|
{
|
|
// we must make sure the brush is aligned with the logical coordinates
|
|
// before selecting it or using the same brush for the background of
|
|
// different windows would result in discontinuities
|
|
wxSize sizeBrushBitmap = wxDefaultSize;
|
|
wxBitmap *stipple = brush.GetStipple();
|
|
if ( stipple && stipple->IsOk() )
|
|
sizeBrushBitmap = stipple->GetSize();
|
|
else if ( brush.IsHatch() )
|
|
sizeBrushBitmap = wxSize(8, 8);
|
|
|
|
if ( sizeBrushBitmap.IsFullySpecified() )
|
|
{
|
|
if ( !::SetBrushOrgEx
|
|
(
|
|
GetHdc(),
|
|
m_deviceOriginX % sizeBrushBitmap.x,
|
|
m_deviceOriginY % sizeBrushBitmap.y,
|
|
NULL // [out] previous brush origin
|
|
) )
|
|
{
|
|
wxLogLastError(wxT("SetBrushOrgEx()"));
|
|
}
|
|
}
|
|
|
|
HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush));
|
|
if ( hbrush == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(brush)"));
|
|
}
|
|
else // selected ok
|
|
{
|
|
if ( !m_oldBrush )
|
|
m_oldBrush = (WXHBRUSH)hbrush;
|
|
|
|
m_brush = brush;
|
|
}
|
|
}
|
|
else // invalid brush, reset the current brush
|
|
{
|
|
if ( m_oldBrush )
|
|
{
|
|
if ( ::SelectObject(GetHdc(), (HPEN) m_oldBrush) == HGDI_ERROR )
|
|
{
|
|
wxLogLastError(wxT("SelectObject(old brush)"));
|
|
}
|
|
|
|
m_oldBrush = 0;
|
|
}
|
|
|
|
m_brush = wxNullBrush;
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::SetBackground(const wxBrush& brush)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
m_backgroundBrush = brush;
|
|
|
|
if ( m_backgroundBrush.IsOk() )
|
|
{
|
|
(void)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel());
|
|
}
|
|
}
|
|
|
|
void wxMSWDCImpl::SetBackgroundMode(int mode)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
m_backgroundMode = mode;
|
|
|
|
// SetBackgroundColour now only refers to text background
|
|
// and m_backgroundMode is used there
|
|
}
|
|
|
|
void wxMSWDCImpl::SetLogicalFunction(wxRasterOperationMode function)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
m_logicalFunction = function;
|
|
|
|
SetRop(m_hDC);
|
|
}
|
|
|
|
void wxMSWDCImpl::SetRop(WXHDC dc)
|
|
{
|
|
if ( !dc || m_logicalFunction < 0 )
|
|
return;
|
|
|
|
int rop;
|
|
|
|
switch (m_logicalFunction)
|
|
{
|
|
case wxCLEAR: rop = R2_BLACK; break;
|
|
case wxXOR: rop = R2_XORPEN; break;
|
|
case wxINVERT: rop = R2_NOT; break;
|
|
case wxOR_REVERSE: rop = R2_MERGEPENNOT; break;
|
|
case wxAND_REVERSE: rop = R2_MASKPENNOT; break;
|
|
case wxCOPY: rop = R2_COPYPEN; break;
|
|
case wxAND: rop = R2_MASKPEN; break;
|
|
case wxAND_INVERT: rop = R2_MASKNOTPEN; break;
|
|
case wxNO_OP: rop = R2_NOP; break;
|
|
case wxNOR: rop = R2_NOTMERGEPEN; break;
|
|
case wxEQUIV: rop = R2_NOTXORPEN; break;
|
|
case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break;
|
|
case wxOR_INVERT: rop = R2_MERGENOTPEN; break;
|
|
case wxNAND: rop = R2_NOTMASKPEN; break;
|
|
case wxOR: rop = R2_MERGEPEN; break;
|
|
case wxSET: rop = R2_WHITE; break;
|
|
default:
|
|
wxFAIL_MSG( wxS("unknown logical function") );
|
|
return;
|
|
}
|
|
|
|
SetROP2(GetHdc(), rop);
|
|
}
|
|
|
|
bool wxMSWDCImpl::StartDoc(const wxString& WXUNUSED(message))
|
|
{
|
|
// We might be previewing, so return true to let it continue.
|
|
return true;
|
|
}
|
|
|
|
void wxMSWDCImpl::EndDoc()
|
|
{
|
|
}
|
|
|
|
void wxMSWDCImpl::StartPage()
|
|
{
|
|
}
|
|
|
|
void wxMSWDCImpl::EndPage()
|
|
{
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// text metrics
|
|
// ---------------------------------------------------------------------------
|
|
|
|
wxCoord wxMSWDCImpl::GetCharHeight() const
|
|
{
|
|
WXMICROWIN_CHECK_HDC_RET(0)
|
|
|
|
TEXTMETRIC lpTextMetric;
|
|
|
|
GetTextMetrics(GetHdc(), &lpTextMetric);
|
|
|
|
return lpTextMetric.tmHeight;
|
|
}
|
|
|
|
wxCoord wxMSWDCImpl::GetCharWidth() const
|
|
{
|
|
WXMICROWIN_CHECK_HDC_RET(0)
|
|
|
|
TEXTMETRIC lpTextMetric;
|
|
|
|
GetTextMetrics(GetHdc(), &lpTextMetric);
|
|
|
|
return lpTextMetric.tmAveCharWidth;
|
|
}
|
|
|
|
void wxMSWDCImpl::DoGetFontMetrics(int *height,
|
|
int *ascent,
|
|
int *descent,
|
|
int *internalLeading,
|
|
int *externalLeading,
|
|
int *averageWidth) const
|
|
{
|
|
TEXTMETRIC tm;
|
|
|
|
GetTextMetrics(GetHdc(), &tm);
|
|
|
|
if ( height )
|
|
*height = tm.tmHeight;
|
|
if ( ascent )
|
|
*ascent = tm.tmAscent;
|
|
if ( descent )
|
|
*descent = tm.tmDescent;
|
|
if ( internalLeading )
|
|
*internalLeading = tm.tmInternalLeading;
|
|
if ( externalLeading )
|
|
*externalLeading = tm.tmExternalLeading;
|
|
if ( averageWidth )
|
|
*averageWidth = tm.tmAveCharWidth;
|
|
}
|
|
|
|
void wxMSWDCImpl::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
|
|
wxCoord *descent, wxCoord *externalLeading,
|
|
const wxFont *font) const
|
|
{
|
|
#ifdef __WXMICROWIN__
|
|
if (!GetHDC())
|
|
{
|
|
if (x) *x = 0;
|
|
if (y) *y = 0;
|
|
if (descent) *descent = 0;
|
|
if (externalLeading) *externalLeading = 0;
|
|
return;
|
|
}
|
|
#endif // __WXMICROWIN__
|
|
|
|
wxASSERT_MSG( !font || font->IsOk(), wxT("invalid font in wxMSWDCImpl::GetTextExtent") );
|
|
|
|
wxTextMeasure txm(GetOwner(), font);
|
|
txm.GetTextExtent(string, x, y, descent, externalLeading);
|
|
}
|
|
|
|
|
|
bool wxMSWDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
|
|
{
|
|
wxTextMeasure txm(GetOwner(), NULL); // don't change the font
|
|
return txm.GetPartialTextExtents(text, widths, 1.0);
|
|
}
|
|
|
|
namespace
|
|
{
|
|
|
|
void ApplyEffectiveScale(double scale, int sign, int *device, int *logical)
|
|
{
|
|
// To reduce rounding errors as much as possible, we try to use the largest
|
|
// possible extent (2^27-1) for the device space but we must also avoid
|
|
// overflowing the int range i.e. ensure that logical extents are less than
|
|
// 2^31 in magnitude. So the minimal scale we can use is 1/16 as for
|
|
// anything smaller VIEWPORT_EXTENT/scale would overflow the int range.
|
|
static const double MIN_LOGICAL_SCALE = 1./16;
|
|
|
|
double physExtent = VIEWPORT_EXTENT;
|
|
if ( scale < MIN_LOGICAL_SCALE )
|
|
{
|
|
physExtent *= scale/MIN_LOGICAL_SCALE;
|
|
scale = MIN_LOGICAL_SCALE;
|
|
}
|
|
|
|
*device = wxRound(physExtent);
|
|
*logical = sign*wxRound(VIEWPORT_EXTENT/scale);
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
void wxMSWDCImpl::RealizeScaleAndOrigin()
|
|
{
|
|
// although it may seem wasteful to always use MM_ANISOTROPIC here instead
|
|
// of using MM_TEXT if there is no scaling, benchmarking doesn't detect any
|
|
// noticeable difference between these mapping modes
|
|
#ifndef __WXWINCE__
|
|
::SetMapMode(GetHdc(), MM_ANISOTROPIC);
|
|
|
|
// wxWidgets API assumes that the coordinate space is "infinite" (i.e. only
|
|
// limited by 2^32 range of the integer coordinates) but in MSW API we must
|
|
// actually specify the extents that we use so compute them here.
|
|
|
|
int devExtX, devExtY, // Viewport, i.e. device space, extents.
|
|
logExtX, logExtY; // Window, i.e. logical coordinate space, extents.
|
|
|
|
ApplyEffectiveScale(m_scaleX, m_signX, &devExtX, &logExtX);
|
|
ApplyEffectiveScale(m_scaleY, m_signY, &devExtY, &logExtY);
|
|
|
|
// In GDI anisotropic mode only devExt/logExt ratio is important
|
|
// so we can reduce the fractions to avoid large numbers
|
|
// which could cause arithmetic overflows inside Win API.
|
|
unsigned int gcd = wxGCD(abs(devExtX), abs(logExtX));
|
|
devExtX /= gcd;
|
|
logExtX /= gcd;
|
|
gcd = wxGCD(abs(devExtY), abs(logExtY));
|
|
devExtY /= gcd;
|
|
logExtY /= gcd;
|
|
|
|
::SetViewportExtEx(GetHdc(), devExtX, devExtY, NULL);
|
|
::SetWindowExtEx(GetHdc(), logExtX, logExtY, NULL);
|
|
|
|
::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL);
|
|
::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL);
|
|
#endif
|
|
}
|
|
|
|
void wxMSWDCImpl::SetMapMode(wxMappingMode mode)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
m_mappingMode = mode;
|
|
|
|
if ( mode == wxMM_TEXT )
|
|
{
|
|
m_logicalScaleX =
|
|
m_logicalScaleY = 1.0;
|
|
}
|
|
else // need to do some calculations
|
|
{
|
|
int pixel_width = ::GetDeviceCaps(GetHdc(), HORZRES),
|
|
pixel_height = ::GetDeviceCaps(GetHdc(), VERTRES),
|
|
mm_width = ::GetDeviceCaps(GetHdc(), HORZSIZE),
|
|
mm_height = ::GetDeviceCaps(GetHdc(), VERTSIZE);
|
|
|
|
if ( (mm_width == 0) || (mm_height == 0) )
|
|
{
|
|
// we can't calculate mm2pixels[XY] then!
|
|
return;
|
|
}
|
|
|
|
double mm2pixelsX = (double)pixel_width / mm_width,
|
|
mm2pixelsY = (double)pixel_height / mm_height;
|
|
|
|
switch (mode)
|
|
{
|
|
case wxMM_TWIPS:
|
|
m_logicalScaleX = twips2mm * mm2pixelsX;
|
|
m_logicalScaleY = twips2mm * mm2pixelsY;
|
|
break;
|
|
|
|
case wxMM_POINTS:
|
|
m_logicalScaleX = pt2mm * mm2pixelsX;
|
|
m_logicalScaleY = pt2mm * mm2pixelsY;
|
|
break;
|
|
|
|
case wxMM_METRIC:
|
|
m_logicalScaleX = mm2pixelsX;
|
|
m_logicalScaleY = mm2pixelsY;
|
|
break;
|
|
|
|
case wxMM_LOMETRIC:
|
|
m_logicalScaleX = mm2pixelsX / 10.0;
|
|
m_logicalScaleY = mm2pixelsY / 10.0;
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG( wxT("unknown mapping mode in SetMapMode") );
|
|
}
|
|
}
|
|
|
|
ComputeScaleAndOrigin();
|
|
|
|
RealizeScaleAndOrigin();
|
|
}
|
|
|
|
void wxMSWDCImpl::SetUserScale(double x, double y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( x == m_userScaleX && y == m_userScaleY )
|
|
return;
|
|
|
|
wxDCImpl::SetUserScale(x,y);
|
|
|
|
RealizeScaleAndOrigin();
|
|
}
|
|
|
|
void wxMSWDCImpl::SetAxisOrientation(bool xLeftRight,
|
|
bool yBottomUp)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
int signX = xLeftRight ? 1 : -1,
|
|
signY = yBottomUp ? -1 : 1;
|
|
|
|
if (signX == m_signX && signY == m_signY)
|
|
return;
|
|
|
|
wxDCImpl::SetAxisOrientation( xLeftRight, yBottomUp );
|
|
|
|
RealizeScaleAndOrigin();
|
|
}
|
|
|
|
void wxMSWDCImpl::SetLogicalOrigin(wxCoord x, wxCoord y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( x == m_logicalOriginX && y == m_logicalOriginY )
|
|
return;
|
|
|
|
wxDCImpl::SetLogicalOrigin( x, y );
|
|
|
|
RealizeScaleAndOrigin();
|
|
}
|
|
|
|
// For use by wxWidgets only, unless custom units are required.
|
|
void wxMSWDCImpl::SetLogicalScale(double x, double y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
wxDCImpl::SetLogicalScale(x,y);
|
|
}
|
|
|
|
void wxMSWDCImpl::SetDeviceOrigin(wxCoord x, wxCoord y)
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( x == m_deviceOriginX && y == m_deviceOriginY )
|
|
return;
|
|
|
|
wxDCImpl::SetDeviceOrigin( x, y );
|
|
|
|
::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Transform matrix
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#if wxUSE_DC_TRANSFORM_MATRIX
|
|
|
|
bool wxMSWDCImpl::CanUseTransformMatrix() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool wxMSWDCImpl::SetTransformMatrix(const wxAffineMatrix2D &matrix)
|
|
{
|
|
if ( matrix.IsIdentity() )
|
|
{
|
|
ResetTransformMatrix();
|
|
return true;
|
|
}
|
|
|
|
if ( !::SetGraphicsMode(GetHdc(), GM_ADVANCED) )
|
|
{
|
|
wxLogLastError(wxT("SetGraphicsMode"));
|
|
return false;
|
|
}
|
|
|
|
wxMatrix2D mat;
|
|
wxPoint2DDouble tr;
|
|
matrix.Get(&mat, &tr);
|
|
|
|
XFORM xform;
|
|
xform.eM11 = mat.m_11;
|
|
xform.eM12 = mat.m_12;
|
|
xform.eM21 = mat.m_21;
|
|
xform.eM22 = mat.m_22;
|
|
xform.eDx = tr.m_x;
|
|
xform.eDy = tr.m_y;
|
|
|
|
if ( !::SetWorldTransform(GetHdc(), &xform) )
|
|
{
|
|
wxLogLastError(wxT("SetWorldTransform"));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
wxAffineMatrix2D wxMSWDCImpl::GetTransformMatrix() const
|
|
{
|
|
wxAffineMatrix2D transform;
|
|
|
|
XFORM xform;
|
|
if ( !::GetWorldTransform(GetHdc(), &xform) )
|
|
{
|
|
wxLogLastError(wxT("GetWorldTransform"));
|
|
return transform;
|
|
}
|
|
|
|
wxMatrix2D m(xform.eM11, xform.eM12, xform.eM21, xform.eM22);
|
|
wxPoint2DDouble p(xform.eDx, xform.eDy);
|
|
transform.Set(m, p);
|
|
|
|
return transform;
|
|
}
|
|
|
|
void wxMSWDCImpl::ResetTransformMatrix()
|
|
{
|
|
::ModifyWorldTransform(GetHdc(), NULL, MWT_IDENTITY);
|
|
::SetGraphicsMode(GetHdc(), GM_COMPATIBLE);
|
|
}
|
|
|
|
#endif // wxUSE_DC_TRANSFORM_MATRIX
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// bit blit
|
|
// ---------------------------------------------------------------------------
|
|
|
|
bool wxMSWDCImpl::DoBlit(wxCoord dstX, wxCoord dstY,
|
|
wxCoord dstWidth, wxCoord dstHeight,
|
|
wxDC *source,
|
|
wxCoord srcX, wxCoord srcY,
|
|
wxRasterOperationMode rop, bool useMask,
|
|
wxCoord srcMaskX, wxCoord srcMaskY)
|
|
{
|
|
return DoStretchBlit(dstX, dstY, dstWidth, dstHeight, source, srcX, srcY, dstWidth, dstHeight, rop, useMask, srcMaskX, srcMaskY);
|
|
}
|
|
|
|
bool wxMSWDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest,
|
|
wxCoord dstWidth, wxCoord dstHeight,
|
|
wxDC *source,
|
|
wxCoord xsrc, wxCoord ysrc,
|
|
wxCoord srcWidth, wxCoord srcHeight,
|
|
wxRasterOperationMode rop, bool useMask,
|
|
wxCoord xsrcMask, wxCoord ysrcMask)
|
|
{
|
|
wxCHECK_MSG( source, false, wxT("wxMSWDCImpl::Blit(): NULL wxDC pointer") );
|
|
|
|
WXMICROWIN_CHECK_HDC_RET(false)
|
|
|
|
wxMSWDCImpl *implSrc = wxDynamicCast( source->GetImpl(), wxMSWDCImpl );
|
|
if ( !implSrc )
|
|
{
|
|
// TODO: Do we want to be able to blit from other DCs too?
|
|
return false;
|
|
}
|
|
|
|
HDC hdcSrc = GetHdcOf(*implSrc);
|
|
|
|
// if either the source or destination has alpha channel, we must use
|
|
// AlphaBlt() as other function don't handle it correctly
|
|
const wxBitmap& bmpSrc = implSrc->GetSelectedBitmap();
|
|
if ( bmpSrc.IsOk() && (bmpSrc.HasAlpha() ||
|
|
(m_selectedBitmap.IsOk() && m_selectedBitmap.HasAlpha())) )
|
|
{
|
|
if ( AlphaBlt(this, xdest, ydest, dstWidth, dstHeight,
|
|
xsrc, ysrc, srcWidth, srcHeight, hdcSrc, bmpSrc) )
|
|
{
|
|
CalcBoundingBox(xdest, ydest);
|
|
CalcBoundingBox(xdest + dstWidth, ydest + dstHeight);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
wxMask *mask = NULL;
|
|
if ( useMask )
|
|
{
|
|
mask = bmpSrc.GetMask();
|
|
|
|
if ( !(bmpSrc.IsOk() && mask && mask->GetMaskBitmap()) )
|
|
{
|
|
// don't give assert here because this would break existing
|
|
// programs - just silently ignore useMask parameter
|
|
useMask = false;
|
|
}
|
|
}
|
|
|
|
if (xsrcMask == -1 && ysrcMask == -1)
|
|
{
|
|
xsrcMask = xsrc; ysrcMask = ysrc;
|
|
}
|
|
|
|
wxTextColoursChanger textCol(GetHdc(), *this);
|
|
|
|
DWORD dwRop;
|
|
switch (rop)
|
|
{
|
|
case wxXOR: dwRop = SRCINVERT; break;
|
|
case wxINVERT: dwRop = DSTINVERT; break;
|
|
case wxOR_REVERSE: dwRop = 0x00DD0228; break;
|
|
case wxAND_REVERSE: dwRop = SRCERASE; break;
|
|
case wxCLEAR: dwRop = BLACKNESS; break;
|
|
case wxSET: dwRop = WHITENESS; break;
|
|
case wxOR_INVERT: dwRop = MERGEPAINT; break;
|
|
case wxAND: dwRop = SRCAND; break;
|
|
case wxOR: dwRop = SRCPAINT; break;
|
|
case wxEQUIV: dwRop = 0x00990066; break;
|
|
case wxNAND: dwRop = 0x007700E6; break;
|
|
case wxAND_INVERT: dwRop = 0x00220326; break;
|
|
case wxCOPY: dwRop = SRCCOPY; break;
|
|
case wxNO_OP: dwRop = DSTCOPY; break;
|
|
case wxSRC_INVERT: dwRop = NOTSRCCOPY; break;
|
|
case wxNOR: dwRop = NOTSRCCOPY; break;
|
|
default:
|
|
wxFAIL_MSG( wxT("unsupported logical function") );
|
|
return false;
|
|
}
|
|
|
|
// Most of the operations involve the source or the pattern, but a few of
|
|
// them (and only those few, no other are possible) only use destination
|
|
// HDC. For them we must not give a valid source HDC to MaskBlt() as it
|
|
// still uses it, somehow, and the result is garbage.
|
|
if ( dwRop == BLACKNESS || dwRop == WHITENESS ||
|
|
dwRop == DSTINVERT || dwRop == DSTCOPY )
|
|
{
|
|
hdcSrc = NULL;
|
|
}
|
|
|
|
bool success = false;
|
|
|
|
if (useMask)
|
|
{
|
|
#ifdef __WIN32__
|
|
// we want the part of the image corresponding to the mask to be
|
|
// transparent, so use "DSTCOPY" ROP for the mask points (the usual
|
|
// meaning of fg and bg is inverted which corresponds to wxWin notion
|
|
// of the mask which is also contrary to the Windows one)
|
|
|
|
// On some systems, MaskBlt succeeds yet is much much slower
|
|
// than the wxWidgets fall-back implementation. So we need
|
|
// to be able to switch this on and off at runtime.
|
|
#if wxUSE_SYSTEM_OPTIONS
|
|
static bool s_maskBltAllowed = wxSystemOptions::GetOptionInt("no-maskblt") == 0;
|
|
if ( s_maskBltAllowed )
|
|
#endif
|
|
{
|
|
if ( dstWidth == srcWidth && dstHeight == srcHeight )
|
|
{
|
|
success = ::MaskBlt
|
|
(
|
|
GetHdc(),
|
|
xdest, ydest, dstWidth, dstHeight,
|
|
hdcSrc,
|
|
xsrc, ysrc,
|
|
(HBITMAP)mask->GetMaskBitmap(),
|
|
xsrcMask, ysrcMask,
|
|
MAKEROP4(dwRop, DSTCOPY)
|
|
) != 0;
|
|
}
|
|
}
|
|
|
|
if ( !success )
|
|
#endif // Win32
|
|
{
|
|
// Blit bitmap with mask
|
|
HDC dc_mask ;
|
|
HDC dc_buffer ;
|
|
HBITMAP buffer_bmap ;
|
|
|
|
#if wxUSE_DC_CACHEING
|
|
// create a temp buffer bitmap and DCs to access it and the mask
|
|
wxDCCacheEntry* dcCacheEntry1 = FindDCInCache(NULL, hdcSrc);
|
|
dc_mask = (HDC) dcCacheEntry1->m_dc;
|
|
|
|
wxDCCacheEntry* dcCacheEntry2 = FindDCInCache(dcCacheEntry1, GetHDC());
|
|
dc_buffer = (HDC) dcCacheEntry2->m_dc;
|
|
|
|
wxDCCacheEntry* bitmapCacheEntry = FindBitmapInCache(GetHDC(),
|
|
dstWidth, dstHeight);
|
|
|
|
buffer_bmap = (HBITMAP) bitmapCacheEntry->m_bitmap;
|
|
#else // !wxUSE_DC_CACHEING
|
|
// create a temp buffer bitmap and DCs to access it and the mask
|
|
dc_mask = wxMSWImpl::CreateCompatibleDCWithLayout(hdcSrc);
|
|
dc_buffer = wxMSWImpl::CreateCompatibleDCWithLayout(GetHdc());
|
|
buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), dstWidth, dstHeight);
|
|
#endif // wxUSE_DC_CACHEING/!wxUSE_DC_CACHEING
|
|
HGDIOBJ hOldMaskBitmap = ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap());
|
|
HGDIOBJ hOldBufferBitmap = ::SelectObject(dc_buffer, buffer_bmap);
|
|
|
|
// copy dest to buffer
|
|
if ( !::BitBlt(dc_buffer, 0, 0, dstWidth, dstHeight,
|
|
GetHdc(), xdest, ydest, SRCCOPY) )
|
|
{
|
|
wxLogLastError(wxT("BitBlt"));
|
|
}
|
|
|
|
SET_STRETCH_BLT_MODE(GetHdc());
|
|
|
|
// copy src to buffer using selected raster op
|
|
if ( !::StretchBlt(dc_buffer, 0, 0, dstWidth, dstHeight,
|
|
hdcSrc, xsrc, ysrc, srcWidth, srcHeight, dwRop) )
|
|
{
|
|
wxLogLastError(wxT("StretchBlt"));
|
|
}
|
|
|
|
// set masked area in buffer to BLACK
|
|
{
|
|
wxTextColoursChanger textCol2(GetHdc(), *wxBLACK, *wxWHITE);
|
|
if ( !::StretchBlt(dc_buffer, 0, 0, dstWidth, dstHeight,
|
|
dc_mask, xsrcMask, ysrcMask,
|
|
srcWidth, srcHeight, SRCAND) )
|
|
{
|
|
wxLogLastError(wxT("StretchBlt"));
|
|
}
|
|
|
|
// set unmasked area in dest to BLACK
|
|
::SetBkColor(GetHdc(), RGB(0, 0, 0));
|
|
::SetTextColor(GetHdc(), RGB(255, 255, 255));
|
|
if ( !::StretchBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight,
|
|
dc_mask, xsrcMask, ysrcMask,
|
|
srcWidth, srcHeight, SRCAND) )
|
|
{
|
|
wxLogLastError(wxT("StretchBlt"));
|
|
}
|
|
} // restore the original text and background colours
|
|
|
|
// OR buffer to dest
|
|
success = ::BitBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight,
|
|
dc_buffer, 0, 0, SRCPAINT) != 0;
|
|
if ( !success )
|
|
{
|
|
wxLogLastError(wxT("BitBlt"));
|
|
}
|
|
|
|
// tidy up temporary DCs and bitmap
|
|
::SelectObject(dc_mask, hOldMaskBitmap);
|
|
::SelectObject(dc_buffer, hOldBufferBitmap);
|
|
|
|
#if !wxUSE_DC_CACHEING
|
|
{
|
|
::DeleteDC(dc_mask);
|
|
::DeleteDC(dc_buffer);
|
|
::DeleteObject(buffer_bmap);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
else // no mask, just BitBlt() it
|
|
{
|
|
// if we already have a DIB, draw it using StretchDIBits(), otherwise
|
|
// use StretchBlt() if available and finally fall back to BitBlt()
|
|
|
|
// FIXME: use appropriate WinCE functions
|
|
#ifndef __WXWINCE__
|
|
const int caps = ::GetDeviceCaps(GetHdc(), RASTERCAPS);
|
|
if ( bmpSrc.IsOk() && (caps & RC_STRETCHDIB) )
|
|
{
|
|
DIBSECTION ds;
|
|
wxZeroMemory(ds);
|
|
|
|
if ( ::GetObject(GetHbitmapOf(bmpSrc),
|
|
sizeof(ds),
|
|
&ds) == sizeof(ds) )
|
|
{
|
|
SET_STRETCH_BLT_MODE(GetHdc());
|
|
|
|
// Unlike all the other functions used here (i.e. AlphaBlt(),
|
|
// MaskBlt(), BitBlt() and StretchBlt()), StretchDIBits() does
|
|
// not take into account the source DC logical coordinates
|
|
// automatically as it doesn't even work with the source HDC.
|
|
// So do this manually to ensure that the coordinates are
|
|
// interpreted in the same way here as in all the other cases.
|
|
xsrc = source->LogicalToDeviceX(xsrc);
|
|
ysrc = source->LogicalToDeviceY(ysrc);
|
|
srcWidth = source->LogicalToDeviceXRel(srcWidth);
|
|
srcHeight = source->LogicalToDeviceYRel(srcHeight);
|
|
|
|
// Figure out what co-ordinate system we're supposed to specify
|
|
// ysrc in.
|
|
const LONG hDIB = ds.dsBmih.biHeight;
|
|
if ( hDIB > 0 )
|
|
{
|
|
// reflect ysrc
|
|
ysrc = hDIB - (ysrc + srcHeight);
|
|
}
|
|
|
|
if ( ::StretchDIBits(GetHdc(),
|
|
xdest, ydest,
|
|
dstWidth, dstHeight,
|
|
xsrc, ysrc,
|
|
srcWidth, srcHeight,
|
|
ds.dsBm.bmBits,
|
|
(LPBITMAPINFO)&ds.dsBmih,
|
|
DIB_RGB_COLORS,
|
|
dwRop
|
|
) == (int)GDI_ERROR )
|
|
{
|
|
// On Win9x this API fails most (all?) of the time, so
|
|
// logging it becomes quite distracting. Since it falls
|
|
// back to the code below this is not really serious, so
|
|
// don't log it.
|
|
//wxLogLastError(wxT("StretchDIBits"));
|
|
}
|
|
else
|
|
{
|
|
success = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( !success && (caps & RC_STRETCHBLT) )
|
|
#endif
|
|
// __WXWINCE__
|
|
{
|
|
SET_STRETCH_BLT_MODE(GetHdc());
|
|
|
|
if ( !::StretchBlt
|
|
(
|
|
GetHdc(),
|
|
xdest, ydest, dstWidth, dstHeight,
|
|
hdcSrc,
|
|
xsrc, ysrc, srcWidth, srcHeight,
|
|
dwRop
|
|
) )
|
|
{
|
|
wxLogLastError(wxT("StretchBlt"));
|
|
}
|
|
else
|
|
{
|
|
success = true;
|
|
}
|
|
}
|
|
|
|
if ( !success )
|
|
{
|
|
if ( !::BitBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight,
|
|
hdcSrc, xsrc, ysrc, dwRop) )
|
|
{
|
|
wxLogLastError(wxT("BitBlt"));
|
|
}
|
|
else
|
|
{
|
|
success = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( success )
|
|
{
|
|
CalcBoundingBox(xdest, ydest);
|
|
CalcBoundingBox(xdest + dstWidth, ydest + dstHeight);
|
|
}
|
|
|
|
return success;
|
|
}
|
|
|
|
void wxMSWDCImpl::GetDeviceSize(int *width, int *height) const
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
if ( width )
|
|
*width = ::GetDeviceCaps(GetHdc(), HORZRES);
|
|
if ( height )
|
|
*height = ::GetDeviceCaps(GetHdc(), VERTRES);
|
|
}
|
|
|
|
void wxMSWDCImpl::DoGetSizeMM(int *w, int *h) const
|
|
{
|
|
WXMICROWIN_CHECK_HDC
|
|
|
|
// if we implement it in terms of DoGetSize() instead of directly using the
|
|
// results returned by GetDeviceCaps(HORZ/VERTSIZE) as was done before, it
|
|
// will also work for wxWindowDC and wxClientDC even though their size is
|
|
// not the same as the total size of the screen
|
|
int wPixels, hPixels;
|
|
DoGetSize(&wPixels, &hPixels);
|
|
|
|
if ( w )
|
|
{
|
|
int wTotal = ::GetDeviceCaps(GetHdc(), HORZRES);
|
|
|
|
wxCHECK_RET( wTotal, wxT("0 width device?") );
|
|
|
|
*w = (wPixels * ::GetDeviceCaps(GetHdc(), HORZSIZE)) / wTotal;
|
|
}
|
|
|
|
if ( h )
|
|
{
|
|
int hTotal = ::GetDeviceCaps(GetHdc(), VERTRES);
|
|
|
|
wxCHECK_RET( hTotal, wxT("0 height device?") );
|
|
|
|
*h = (hPixels * ::GetDeviceCaps(GetHdc(), VERTSIZE)) / hTotal;
|
|
}
|
|
}
|
|
|
|
wxSize wxMSWDCImpl::GetPPI() const
|
|
{
|
|
WXMICROWIN_CHECK_HDC_RET(wxSize(0,0))
|
|
|
|
int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
|
|
int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
|
|
|
|
return wxSize(x, y);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// DC caching
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#if wxUSE_DC_CACHEING
|
|
|
|
/*
|
|
* This implementation is a bit ugly and uses the old-fashioned wxList class, so I will
|
|
* improve it in due course, either using arrays, or simply storing pointers to one
|
|
* entry for the bitmap, and two for the DCs. -- JACS
|
|
*/
|
|
|
|
wxObjectList wxMSWDCImpl::sm_bitmapCache;
|
|
wxObjectList wxMSWDCImpl::sm_dcCache;
|
|
|
|
wxDCCacheEntry::wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth)
|
|
{
|
|
m_bitmap = hBitmap;
|
|
m_dc = 0;
|
|
m_width = w;
|
|
m_height = h;
|
|
m_depth = depth;
|
|
}
|
|
|
|
wxDCCacheEntry::wxDCCacheEntry(WXHDC hDC, int depth)
|
|
{
|
|
m_bitmap = 0;
|
|
m_dc = hDC;
|
|
m_width = 0;
|
|
m_height = 0;
|
|
m_depth = depth;
|
|
}
|
|
|
|
wxDCCacheEntry::~wxDCCacheEntry()
|
|
{
|
|
if (m_bitmap)
|
|
::DeleteObject((HBITMAP) m_bitmap);
|
|
if (m_dc)
|
|
::DeleteDC((HDC) m_dc);
|
|
}
|
|
|
|
wxDCCacheEntry* wxMSWDCImpl::FindBitmapInCache(WXHDC dc, int w, int h)
|
|
{
|
|
int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
|
|
wxList::compatibility_iterator node = sm_bitmapCache.GetFirst();
|
|
while (node)
|
|
{
|
|
wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
|
|
|
|
if (entry->m_depth == depth)
|
|
{
|
|
if (entry->m_width < w || entry->m_height < h)
|
|
{
|
|
::DeleteObject((HBITMAP) entry->m_bitmap);
|
|
entry->m_bitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h);
|
|
if ( !entry->m_bitmap)
|
|
{
|
|
wxLogLastError(wxT("CreateCompatibleBitmap"));
|
|
}
|
|
entry->m_width = w; entry->m_height = h;
|
|
return entry;
|
|
}
|
|
return entry;
|
|
}
|
|
|
|
node = node->GetNext();
|
|
}
|
|
WXHBITMAP hBitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h);
|
|
if ( !hBitmap)
|
|
{
|
|
wxLogLastError(wxT("CreateCompatibleBitmap"));
|
|
}
|
|
wxDCCacheEntry* entry = new wxDCCacheEntry(hBitmap, w, h, depth);
|
|
AddToBitmapCache(entry);
|
|
return entry;
|
|
}
|
|
|
|
wxDCCacheEntry* wxMSWDCImpl::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc)
|
|
{
|
|
int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL);
|
|
wxList::compatibility_iterator node = sm_dcCache.GetFirst();
|
|
while (node)
|
|
{
|
|
wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData();
|
|
|
|
// Don't return the same one as we already have
|
|
if (!notThis || (notThis != entry))
|
|
{
|
|
if (entry->m_depth == depth)
|
|
{
|
|
return entry;
|
|
}
|
|
}
|
|
|
|
node = node->GetNext();
|
|
}
|
|
WXHDC hDC = (WXHDC) wxMSWImpl::CreateCompatibleDCWithLayout((HDC) dc);
|
|
if ( !hDC)
|
|
{
|
|
wxLogLastError(wxT("CreateCompatibleDC"));
|
|
}
|
|
wxDCCacheEntry* entry = new wxDCCacheEntry(hDC, depth);
|
|
AddToDCCache(entry);
|
|
return entry;
|
|
}
|
|
|
|
void wxMSWDCImpl::AddToBitmapCache(wxDCCacheEntry* entry)
|
|
{
|
|
sm_bitmapCache.Append(entry);
|
|
}
|
|
|
|
void wxMSWDCImpl::AddToDCCache(wxDCCacheEntry* entry)
|
|
{
|
|
sm_dcCache.Append(entry);
|
|
}
|
|
|
|
void wxMSWDCImpl::ClearCache()
|
|
{
|
|
WX_CLEAR_LIST(wxList, sm_dcCache);
|
|
WX_CLEAR_LIST(wxList, sm_bitmapCache);
|
|
}
|
|
|
|
// Clean up cache at app exit
|
|
class wxDCModule : public wxModule
|
|
{
|
|
public:
|
|
virtual bool OnInit() { return true; }
|
|
virtual void OnExit() { wxMSWDCImpl::ClearCache(); }
|
|
|
|
private:
|
|
DECLARE_DYNAMIC_CLASS(wxDCModule)
|
|
};
|
|
|
|
IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule)
|
|
|
|
#endif // wxUSE_DC_CACHEING
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// alpha channel support
|
|
// ----------------------------------------------------------------------------
|
|
|
|
static bool AlphaBlt(wxMSWDCImpl* dcDst,
|
|
int x, int y, int dstWidth, int dstHeight,
|
|
int srcX, int srcY,
|
|
int srcWidth, int srcHeight,
|
|
HDC hdcSrc,
|
|
const wxBitmap& bmpSrc)
|
|
{
|
|
wxASSERT_MSG( bmpSrc.IsOk() && bmpSrc.HasAlpha(),
|
|
wxT("AlphaBlt(): invalid bitmap") );
|
|
wxASSERT_MSG( dcDst && hdcSrc, wxT("AlphaBlt(): invalid HDC") );
|
|
|
|
BLENDFUNCTION bf;
|
|
bf.BlendOp = AC_SRC_OVER;
|
|
bf.BlendFlags = 0;
|
|
bf.SourceConstantAlpha = 0xff;
|
|
bf.AlphaFormat = AC_SRC_ALPHA;
|
|
|
|
if ( !wxDynLoadWrappers::AlphaBlend
|
|
(
|
|
GetHdcOf(*dcDst), x, y, dstWidth, dstHeight,
|
|
hdcSrc, srcX, srcY, srcWidth, srcHeight,
|
|
bf
|
|
) )
|
|
{
|
|
wxLogLastError(wxT("AlphaBlend"));
|
|
return false;
|
|
}
|
|
|
|
// There is an extra complication with drawing bitmaps with alpha
|
|
// on bitmaps without alpha: AlphaBlt() modifies the alpha
|
|
// component of the destination bitmap even if it hadn't had it
|
|
// before which is not only unexpected but corrupts the bitmap as
|
|
// all its pixels outside of the (x, y, dstWidth, dstHeight) area
|
|
// are now fully transparent: they already had 0 value of alpha
|
|
// before but it didn't count as long as all other pixels had 0
|
|
// alpha as well, but now that some of them are not transparent any
|
|
// more, the rest of pixels with 0 alpha is transparent. So undo
|
|
// this to avoid "losing" the existing bitmap contents outside of
|
|
// the area affected by AlphaBlt(), see #14403.
|
|
#ifdef wxHAS_RAW_BITMAP
|
|
const wxBitmap& bmpDst = dcDst->GetSelectedBitmap();
|
|
if ( bmpDst.IsOk() && !bmpDst.HasAlpha() && bmpDst.GetDepth() == 32 )
|
|
{
|
|
// We need to deselect the bitmap from the memory DC it is
|
|
// currently selected into before modifying it.
|
|
wxBitmap bmpOld = bmpDst;
|
|
dcDst->DoSelect(wxNullBitmap);
|
|
|
|
// Notice the extra block: we must destroy wxAlphaPixelData
|
|
// before selecting the bitmap into the DC again.
|
|
{
|
|
wxAlphaPixelData data(bmpOld);
|
|
if ( data )
|
|
{
|
|
wxAlphaPixelData::Iterator p(data);
|
|
for ( int y = 0; y < data.GetHeight(); y++ )
|
|
{
|
|
wxAlphaPixelData::Iterator rowStart = p;
|
|
|
|
for ( int x = 0; x < data.GetWidth(); x++ )
|
|
{
|
|
// We choose to use wxALPHA_TRANSPARENT instead
|
|
// of perhaps more logical wxALPHA_OPAQUE here
|
|
// to ensure that the bitmap remains the same
|
|
// as before, i.e. without any alpha at all.
|
|
p.Alpha() = wxALPHA_TRANSPARENT;
|
|
++p;
|
|
}
|
|
|
|
p = rowStart;
|
|
p.OffsetY(data, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Using wxAlphaPixelData sets the internal "has alpha" flag
|
|
// which is usually what we need, but in this particular case
|
|
// we use it to get rid of alpha, not set it, so reset it back.
|
|
bmpOld.ResetAlpha();
|
|
|
|
dcDst->DoSelect(bmpOld);
|
|
}
|
|
#endif // wxHAS_RAW_BITMAP
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void wxMSWDCImpl::DoGradientFillLinear (const wxRect& rect,
|
|
const wxColour& initialColour,
|
|
const wxColour& destColour,
|
|
wxDirection nDirection)
|
|
{
|
|
GRADIENT_RECT grect;
|
|
grect.UpperLeft = 0;
|
|
grect.LowerRight = 1;
|
|
|
|
// invert colours direction if not filling from left-to-right or
|
|
// top-to-bottom
|
|
int firstVertex = nDirection == wxNORTH || nDirection == wxWEST ? 1 : 0;
|
|
|
|
// one vertex for upper left and one for upper-right
|
|
TRIVERTEX vertices[2];
|
|
|
|
vertices[0].x = rect.GetLeft();
|
|
vertices[0].y = rect.GetTop();
|
|
vertices[1].x = rect.GetRight()+1;
|
|
vertices[1].y = rect.GetBottom()+1;
|
|
|
|
vertices[firstVertex].Red = (COLOR16)(initialColour.Red() << 8);
|
|
vertices[firstVertex].Green = (COLOR16)(initialColour.Green() << 8);
|
|
vertices[firstVertex].Blue = (COLOR16)(initialColour.Blue() << 8);
|
|
vertices[firstVertex].Alpha = 0;
|
|
vertices[1 - firstVertex].Red = (COLOR16)(destColour.Red() << 8);
|
|
vertices[1 - firstVertex].Green = (COLOR16)(destColour.Green() << 8);
|
|
vertices[1 - firstVertex].Blue = (COLOR16)(destColour.Blue() << 8);
|
|
vertices[1 - firstVertex].Alpha = 0;
|
|
|
|
if ( wxDynLoadWrappers::GradientFill
|
|
(
|
|
GetHdc(),
|
|
vertices,
|
|
WXSIZEOF(vertices),
|
|
&grect,
|
|
1,
|
|
nDirection == wxWEST || nDirection == wxEAST
|
|
? GRADIENT_FILL_RECT_H
|
|
: GRADIENT_FILL_RECT_V
|
|
) )
|
|
{
|
|
CalcBoundingBox(rect.GetLeft(), rect.GetBottom());
|
|
CalcBoundingBox(rect.GetRight(), rect.GetTop());
|
|
}
|
|
else
|
|
{
|
|
wxLogLastError(wxT("GradientFill"));
|
|
}
|
|
}
|
|
|
|
namespace wxMSWImpl
|
|
{
|
|
|
|
HDC CreateCompatibleDCWithLayout(HDC hdc)
|
|
{
|
|
HDC hdcNew = ::CreateCompatibleDC(hdc);
|
|
if ( hdcNew )
|
|
{
|
|
DWORD dwLayout = wxDynLoadWrappers::GetLayout(hdc);
|
|
if ( dwLayout != GDI_ERROR )
|
|
wxDynLoadWrappers::SetLayout(hdcNew, dwLayout);
|
|
}
|
|
|
|
return hdcNew;
|
|
}
|
|
|
|
} // namespace wxMSWImpl
|
|
|
|
wxLayoutDirection wxMSWDCImpl::GetLayoutDirection() const
|
|
{
|
|
DWORD layout = wxDynLoadWrappers::GetLayout(GetHdc());
|
|
|
|
if ( layout == GDI_ERROR )
|
|
return wxLayout_Default;
|
|
|
|
return layout & LAYOUT_RTL ? wxLayout_RightToLeft : wxLayout_LeftToRight;
|
|
}
|
|
|
|
void wxMSWDCImpl::SetLayoutDirection(wxLayoutDirection dir)
|
|
{
|
|
if ( dir == wxLayout_Default )
|
|
{
|
|
dir = wxApp::MSWGetDefaultLayout(GetWindow());
|
|
if ( dir == wxLayout_Default )
|
|
return;
|
|
}
|
|
|
|
DWORD layout = wxDynLoadWrappers::GetLayout(GetHdc());
|
|
if ( layout == GDI_ERROR )
|
|
return;
|
|
|
|
if ( dir == wxLayout_RightToLeft )
|
|
layout |= LAYOUT_RTL;
|
|
else
|
|
layout &= ~LAYOUT_RTL;
|
|
|
|
wxDynLoadWrappers::SetLayout(GetHdc(), layout);
|
|
}
|