d55d0aa0f5
2. scrollbar thumb now has min size git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/wxUNIVERSAL@8591 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
477 lines
21 KiB
C++
477 lines
21 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/univ/renderer.h
|
|
// Purpose: wxRenderer class declaration
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 06.08.00
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 2000 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
|
|
// Licence: wxWindows license
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
/*
|
|
wxRenderer class is used to draw all wxWindows controls. This is an ABC and
|
|
the look of the application is determined by the concrete derivation of
|
|
wxRenderer used in the program.
|
|
|
|
It also contains a few static methods which may be used by the concrete
|
|
renderers and provide the functionality which is often similar or identical
|
|
in all renderers (using inheritance here would be more restrictive as the
|
|
given concrete renderer may need an arbitrary subset of the base class
|
|
methods)
|
|
*/
|
|
|
|
#ifdef __GNUG__
|
|
#pragma interface "renderer.h"
|
|
#endif
|
|
|
|
#ifndef _WX_UNIV_RENDERER_H_
|
|
#define _WX_UNIV_RENDERER_H_
|
|
|
|
class WXDLLEXPORT wxDC;
|
|
class WXDLLEXPORT wxCheckListBox;
|
|
class WXDLLEXPORT wxListBox;
|
|
class WXDLLEXPORT wxScrollBar;
|
|
class WXDLLEXPORT wxTextCtrl;
|
|
class WXDLLEXPORT wxWindow;
|
|
|
|
#include "wx/string.h"
|
|
#include "wx/gdicmn.h"
|
|
#include "wx/scrolbar.h" // for wxScrollBar::Element
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// constants
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// hit test results
|
|
enum wxHitTest
|
|
{
|
|
wxHT_NOWHERE,
|
|
|
|
// scrollbar
|
|
wxHT_SCROLLBAR_FIRST = wxHT_NOWHERE,
|
|
wxHT_SCROLLBAR_ARROW_LINE_1, // left or upper arrow to scroll by line
|
|
wxHT_SCROLLBAR_ARROW_LINE_2, // right or down
|
|
wxHT_SCROLLBAR_ARROW_PAGE_1, // left or upper arrow to scroll by page
|
|
wxHT_SCROLLBAR_ARROW_PAGE_2, // right or down
|
|
wxHT_SCROLLBAR_THUMB, // on the thumb
|
|
wxHT_SCROLLBAR_BAR_1, // bar to the left/above the thumb
|
|
wxHT_SCROLLBAR_BAR_2, // bar to the right/below the thumb
|
|
wxHT_SCROLLBAR_LAST,
|
|
|
|
wxHT_MAX
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxRenderer: abstract renderers interface
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxRenderer
|
|
{
|
|
public:
|
|
// drawing functions
|
|
// -----------------
|
|
|
|
// draw the controls background
|
|
virtual void DrawBackground(wxDC& dc,
|
|
const wxColour& col,
|
|
const wxRect& rect,
|
|
int flags) = 0;
|
|
|
|
// draw the label inside the given rectangle with the specified alignment
|
|
// and optionally emphasize the character with the given index
|
|
virtual void DrawLabel(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int alignment = wxALIGN_LEFT | wxALIGN_TOP,
|
|
int indexAccel = -1,
|
|
wxRect *rectBounds = NULL) = 0;
|
|
|
|
// same but also draw a bitmap if it is valid
|
|
virtual void DrawButtonLabel(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& image,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int alignment = wxALIGN_LEFT | wxALIGN_TOP,
|
|
int indexAccel = -1,
|
|
wxRect *rectBounds = NULL) = 0;
|
|
|
|
// draw the border and optionally return the rectangle containing the
|
|
// region inside the border
|
|
virtual void DrawBorder(wxDC& dc,
|
|
wxBorder border,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxRect *rectIn = (wxRect *)NULL) = 0;
|
|
|
|
// draw push button border and return the rectangle left for the label
|
|
virtual void DrawButtonBorder(wxDC& dc,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxRect *rectIn = (wxRect *)NULL) = 0;
|
|
|
|
// draw a horizontal line
|
|
virtual void DrawHorizontalLine(wxDC& dc,
|
|
wxCoord y, wxCoord x1, wxCoord x2) = 0;
|
|
|
|
// draw a vertical line
|
|
virtual void DrawVerticalLine(wxDC& dc,
|
|
wxCoord x, wxCoord y1, wxCoord y2) = 0;
|
|
|
|
// draw a frame with the label (horizontal alignment can be specified)
|
|
virtual void DrawFrame(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int alignment = wxALIGN_LEFT,
|
|
int indexAccel = -1) = 0;
|
|
|
|
// draw an arrow in the given direction
|
|
virtual void DrawArrow(wxDC& dc,
|
|
wxDirection dir,
|
|
const wxRect& rect,
|
|
int flags = 0) = 0;
|
|
|
|
// draw the scrollbar thumb
|
|
virtual void DrawScrollbarThumb(wxDC& dc,
|
|
wxOrientation orient,
|
|
const wxRect& rect,
|
|
int flags = 0) = 0;
|
|
|
|
// draw a (part of) scrollbar shaft
|
|
virtual void DrawScrollbarShaft(wxDC& dc,
|
|
wxOrientation orient,
|
|
const wxRect& rect,
|
|
int flags = 0) = 0;
|
|
|
|
// draw the rectangle in the corner between two scrollbars
|
|
virtual void DrawScrollCorner(wxDC& dc,
|
|
const wxRect& rect) = 0;
|
|
|
|
// draw an item of a wxListBox
|
|
virtual void DrawItem(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0) = 0;
|
|
|
|
// draw an item of a wxCheckListBox
|
|
virtual void DrawCheckItem(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0) = 0;
|
|
|
|
// draw a checkbutton (bitmap may be invalid to use default one)
|
|
virtual void DrawCheckButton(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxAlignment align = wxALIGN_LEFT,
|
|
int indexAccel = -1) = 0;
|
|
|
|
// draw a radio button
|
|
virtual void DrawRadioButton(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxAlignment align = wxALIGN_LEFT,
|
|
int indexAccel = -1) = 0;
|
|
|
|
// geometry functions
|
|
// ------------------
|
|
|
|
// get the dimensions of the border: rect.x/y contain the width/height of
|
|
// the left/top side, width/heigh - of the right/bottom one
|
|
virtual wxRect GetBorderDimensions(wxBorder border) const = 0;
|
|
|
|
// the scrollbars may be drawn either inside the window border or outside
|
|
// it - this function is used to decide how to draw them
|
|
virtual bool AreScrollbarsInsideBorder() const = 0;
|
|
|
|
// adjust the size of the control of the given class: for most controls,
|
|
// this just takes into account the border, but for some (buttons, for
|
|
// example) it is more complicated - the result being, in any case, that
|
|
// the control looks "nice" if it uses the adjusted rectangle
|
|
virtual void AdjustSize(wxSize *size, const wxWindow *window) = 0;
|
|
|
|
// gets the bounding box for a scrollbar element for the given (by default
|
|
// - current) thumb position
|
|
virtual wxRect GetScrollbarRect(const wxScrollBar *scrollbar,
|
|
wxScrollBar::Element elem,
|
|
int thumbPos = -1) const = 0;
|
|
|
|
// returns the size of the scrollbar shaft excluding the arrows
|
|
virtual wxCoord GetScrollbarSize(const wxScrollBar *scrollbar) = 0;
|
|
|
|
// returns one of wxHT_SCROLLBAR_XXX constants
|
|
virtual wxHitTest HitTestScrollbar(const wxScrollBar *scrollbar,
|
|
const wxPoint& pt) const = 0;
|
|
|
|
// translate the scrollbar position (in logical units) into physical
|
|
// coordinate (in pixels) and the other way round
|
|
virtual wxCoord ScrollbarToPixel(const wxScrollBar *scrollbar,
|
|
int thumbPos = -1) = 0;
|
|
virtual int PixelToScrollbar(const wxScrollBar *scrollbar,
|
|
wxCoord coord) = 0;
|
|
|
|
// get the height of a listbox item from the base font height
|
|
virtual wxCoord GetListboxItemHeight(wxCoord fontHeight) = 0;
|
|
|
|
// get the size of a checkbox/radio button bitmap
|
|
virtual wxSize GetCheckBitmapSize() const = 0;
|
|
virtual wxSize GetRadioBitmapSize() const = 0;
|
|
virtual wxCoord GetCheckItemMargin() const = 0;
|
|
|
|
// convert between text rectangle and client rectangle for text controls:
|
|
// by default, the former is equal to the latter, but it can be made
|
|
// smaller to leave margins around text
|
|
virtual wxRect GetTextTotalArea(const wxTextCtrl *text,
|
|
const wxRect& rect) = 0;
|
|
virtual wxRect GetTextClientArea(const wxTextCtrl *text,
|
|
const wxRect& rect) = 0;
|
|
|
|
// virtual dtor for any base class
|
|
virtual ~wxRenderer();
|
|
|
|
protected:
|
|
// draw a frame around rectFrame rectangle but not touching the rectLabel
|
|
// one: this is used by DrawFrame()
|
|
void StandardDrawFrame(wxDC& dc,
|
|
const wxRect& rectFrame,
|
|
const wxRect& rectLabel);
|
|
|
|
// standard scrollbar hit testing: this assumes that it only has 2 arrows
|
|
// and a thumb, so the themes which have more complicated scrollbars (e.g.
|
|
// BeOS) can't use this method
|
|
static wxRect StandardGetScrollbarRect(const wxScrollBar *scrollbar,
|
|
wxScrollBar::Element elem,
|
|
int thumbPos,
|
|
const wxSize& sizeArrow);
|
|
static wxHitTest StandardHitTestScrollbar(const wxScrollBar *scrollbar,
|
|
const wxPoint& pt,
|
|
const wxSize& sizeArrow);
|
|
static wxCoord StandardScrollbarToPixel(const wxScrollBar *scrollbar,
|
|
int thumbPos,
|
|
const wxSize& sizeArrow);
|
|
static int StandardPixelToScrollbar(const wxScrollBar *scrollbar,
|
|
wxCoord coord,
|
|
const wxSize& sizeArrow);
|
|
static wxCoord StandardScrollBarSize(const wxScrollBar *scrollbar,
|
|
const wxSize& sizeArrow);
|
|
static void StandardScrollBarThumbSize(wxCoord lenBar,
|
|
int thumbPos,
|
|
int thumbSize,
|
|
int range,
|
|
wxCoord *thumbStart,
|
|
wxCoord *thumbEnd);
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxDelegateRenderer: it is impossible to inherit from any of standard
|
|
// renderers as their declarations are in private code, but you can use this
|
|
// class to override only some of the Draw() functions - all the other ones
|
|
// will be left to the original renderer
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxDelegateRenderer : public wxRenderer
|
|
{
|
|
public:
|
|
wxDelegateRenderer(wxRenderer *renderer) : m_renderer(renderer) { }
|
|
|
|
virtual void DrawBackground(wxDC& dc,
|
|
const wxColour& col,
|
|
const wxRect& rect,
|
|
int flags)
|
|
{ m_renderer->DrawBackground(dc, col, rect, flags); }
|
|
virtual void DrawLabel(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int align = wxALIGN_LEFT | wxALIGN_TOP,
|
|
int indexAccel = -1,
|
|
wxRect *rectBounds = NULL)
|
|
{ m_renderer->DrawLabel(dc, label, rect,
|
|
flags, align, indexAccel, rectBounds); }
|
|
virtual void DrawButtonLabel(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& image,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int align = wxALIGN_LEFT | wxALIGN_TOP,
|
|
int indexAccel = -1,
|
|
wxRect *rectBounds = NULL)
|
|
{ m_renderer->DrawButtonLabel(dc, label, image, rect,
|
|
flags, align, indexAccel, rectBounds); }
|
|
virtual void DrawBorder(wxDC& dc,
|
|
wxBorder border,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxRect *rectIn = (wxRect *)NULL)
|
|
{ m_renderer->DrawBorder(dc, border, rect, flags, rectIn); }
|
|
virtual void DrawFrame(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
int align = wxALIGN_LEFT,
|
|
int indexAccel = -1)
|
|
{ m_renderer->DrawFrame(dc, label, rect, flags, align, indexAccel); }
|
|
virtual void DrawHorizontalLine(wxDC& dc,
|
|
wxCoord y, wxCoord x1, wxCoord x2)
|
|
{ m_renderer->DrawHorizontalLine(dc, y, x1, x2); }
|
|
virtual void DrawVerticalLine(wxDC& dc,
|
|
wxCoord x, wxCoord y1, wxCoord y2)
|
|
{ m_renderer->DrawVerticalLine(dc, x, y1, y2); }
|
|
virtual void DrawButtonBorder(wxDC& dc,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxRect *rectIn = (wxRect *)NULL)
|
|
{ m_renderer->DrawButtonBorder(dc, rect, flags, rectIn); }
|
|
virtual void DrawArrow(wxDC& dc,
|
|
wxDirection dir,
|
|
const wxRect& rect,
|
|
int flags = 0)
|
|
{ m_renderer->DrawArrow(dc, dir, rect, flags); }
|
|
virtual void DrawScrollbarThumb(wxDC& dc,
|
|
wxOrientation orient,
|
|
const wxRect& rect,
|
|
int flags = 0)
|
|
{ m_renderer->DrawScrollbarThumb(dc, orient, rect, flags); }
|
|
virtual void DrawScrollbarShaft(wxDC& dc,
|
|
wxOrientation orient,
|
|
const wxRect& rect,
|
|
int flags = 0)
|
|
{ m_renderer->DrawScrollbarShaft(dc, orient, rect, flags); }
|
|
virtual void DrawScrollCorner(wxDC& dc,
|
|
const wxRect& rect)
|
|
{ m_renderer->DrawScrollCorner(dc, rect); }
|
|
virtual void DrawItem(wxDC& dc,
|
|
const wxString& label,
|
|
const wxRect& rect,
|
|
int flags = 0)
|
|
{ m_renderer->DrawItem(dc, label, rect, flags); }
|
|
virtual void DrawCheckItem(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0)
|
|
{ m_renderer->DrawCheckItem(dc, label, bitmap, rect, flags); }
|
|
virtual void DrawCheckButton(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxAlignment align = wxALIGN_LEFT,
|
|
int indexAccel = -1)
|
|
{ m_renderer->DrawCheckButton(dc, label, bitmap, rect,
|
|
flags, align, indexAccel); }
|
|
virtual void DrawRadioButton(wxDC& dc,
|
|
const wxString& label,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int flags = 0,
|
|
wxAlignment align = wxALIGN_LEFT,
|
|
int indexAccel = -1)
|
|
{ m_renderer->DrawRadioButton(dc, label, bitmap, rect,
|
|
flags, align, indexAccel); }
|
|
|
|
virtual void AdjustSize(wxSize *size, const wxWindow *window)
|
|
{ m_renderer->AdjustSize(size, window); }
|
|
virtual wxRect GetBorderDimensions(wxBorder border) const
|
|
{ return m_renderer->GetBorderDimensions(border); }
|
|
virtual bool AreScrollbarsInsideBorder() const
|
|
{ return m_renderer->AreScrollbarsInsideBorder(); }
|
|
|
|
virtual wxRect GetScrollbarRect(const wxScrollBar *scrollbar,
|
|
wxScrollBar::Element elem,
|
|
int thumbPos = -1) const
|
|
{ return m_renderer->GetScrollbarRect(scrollbar, elem, thumbPos); }
|
|
virtual wxCoord GetScrollbarSize(const wxScrollBar *scrollbar)
|
|
{ return m_renderer->GetScrollbarSize(scrollbar); }
|
|
virtual wxHitTest HitTestScrollbar(const wxScrollBar *scrollbar,
|
|
const wxPoint& pt) const
|
|
{ return m_renderer->HitTestScrollbar(scrollbar, pt); }
|
|
virtual wxCoord ScrollbarToPixel(const wxScrollBar *scrollbar,
|
|
int thumbPos = -1)
|
|
{ return m_renderer->ScrollbarToPixel(scrollbar, thumbPos); }
|
|
virtual int PixelToScrollbar(const wxScrollBar *scrollbar,
|
|
wxCoord coord)
|
|
{ return m_renderer->PixelToScrollbar(scrollbar, coord); }
|
|
virtual wxCoord GetListboxItemHeight(wxCoord fontHeight)
|
|
{ return m_renderer->GetListboxItemHeight(fontHeight); }
|
|
virtual wxSize GetCheckBitmapSize() const
|
|
{ return m_renderer->GetCheckBitmapSize(); }
|
|
virtual wxSize GetRadioBitmapSize() const
|
|
{ return m_renderer->GetRadioBitmapSize(); }
|
|
virtual wxCoord GetCheckItemMargin() const
|
|
{ return m_renderer->GetCheckItemMargin(); }
|
|
|
|
virtual wxRect GetTextTotalArea(const wxTextCtrl *text, const wxRect& rect)
|
|
{ return m_renderer->GetTextTotalArea(text, rect); }
|
|
virtual wxRect GetTextClientArea(const wxTextCtrl *text, const wxRect& rect)
|
|
{ return m_renderer->GetTextClientArea(text, rect); }
|
|
|
|
protected:
|
|
wxRenderer *m_renderer;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxControlRenderer: wraps the wxRenderer functions in a form easy to use from
|
|
// OnPaint()
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxControlRenderer
|
|
{
|
|
public:
|
|
// create a renderer for this dc with this "fundamental" renderer
|
|
wxControlRenderer(wxWindow *control, wxDC& dc, wxRenderer *renderer);
|
|
|
|
// operations
|
|
void DrawLabel(const wxBitmap& bitmap = wxNullBitmap,
|
|
wxCoord marginX = 0, wxCoord marginY = 0);
|
|
void DrawItems(const wxListBox *listbox,
|
|
size_t itemFirst, size_t itemLast);
|
|
void DrawCheckItems(const wxCheckListBox *listbox,
|
|
size_t itemFirst, size_t itemLast);
|
|
void DrawButtonBorder();
|
|
// the line must be either horizontal or vertical
|
|
void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
|
|
void DrawFrame();
|
|
void DrawBitmap(const wxBitmap& bitmap);
|
|
void DrawBackgroundBitmap();
|
|
void DrawScrollbar(const wxScrollBar *scrollbar, int thumbPosOld);
|
|
|
|
// accessors
|
|
wxWindow *GetWindow() const { return m_window; }
|
|
wxRenderer *GetRenderer() const { return m_renderer; }
|
|
|
|
wxDC& GetDC() { return m_dc; }
|
|
|
|
const wxRect& GetRect() const { return m_rect; }
|
|
wxRect& GetRect() { return m_rect; }
|
|
|
|
// static helpers
|
|
static void DrawBitmap(wxDC &dc,
|
|
const wxBitmap& bitmap,
|
|
const wxRect& rect,
|
|
int alignment = wxALIGN_CENTRE |
|
|
wxALIGN_CENTRE_VERTICAL,
|
|
wxStretch stretch = wxSTRETCH_NOT);
|
|
private:
|
|
// common part of DrawItems() and DrawCheckItems()
|
|
void DoDrawItems(const wxListBox *listbox,
|
|
size_t itemFirst, size_t itemLast,
|
|
bool isCheckLbox = FALSE);
|
|
|
|
wxWindow *m_window;
|
|
wxRenderer *m_renderer;
|
|
wxDC& m_dc;
|
|
wxRect m_rect;
|
|
};
|
|
|
|
#endif // _WX_UNIV_RENDERER_H_
|
|
|