///////////////////////////////////////////////////////////////////////////// // Name: src/gtk/dcclient.cpp // Purpose: wxWindowDCImpl implementation // Author: Robert Roebling // RCS-ID: $Id$ // Copyright: (c) 1998 Robert Roebling, Chris Breeze // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #include "wx/gtk/dcclient.h" #ifndef WX_PRECOMP #include "wx/window.h" #include "wx/log.h" #include "wx/dcmemory.h" #include "wx/math.h" #include "wx/image.h" #include "wx/module.h" #endif #include "wx/fontutil.h" #include "wx/gtk/private.h" #include "wx/gtk/private/object.h" //----------------------------------------------------------------------------- // local defines //----------------------------------------------------------------------------- #define XLOG2DEV(x) LogicalToDeviceX(x) #define XLOG2DEVREL(x) LogicalToDeviceXRel(x) #define YLOG2DEV(y) LogicalToDeviceY(y) #define YLOG2DEVREL(y) LogicalToDeviceYRel(y) #define USE_PAINT_REGION 1 //----------------------------------------------------------------------------- // local data //----------------------------------------------------------------------------- #include "bdiag.xbm" #include "fdiag.xbm" #include "cdiag.xbm" #include "horiz.xbm" #include "verti.xbm" #include "cross.xbm" static GdkPixmap* hatches[wxBRUSHSTYLE_LAST_HATCH - wxBRUSHSTYLE_FIRST_HATCH + 1]; //----------------------------------------------------------------------------- // constants //----------------------------------------------------------------------------- static const double RAD2DEG = 180.0 / M_PI; // ---------------------------------------------------------------------------- // private functions // ---------------------------------------------------------------------------- static inline double dmax(double a, double b) { return a > b ? a : b; } static inline double dmin(double a, double b) { return a < b ? a : b; } static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } static GdkPixmap* GetHatch(int style) { wxASSERT(style >= wxBRUSHSTYLE_FIRST_HATCH && style <= wxBRUSHSTYLE_LAST_HATCH); const int i = style - wxBRUSHSTYLE_FIRST_HATCH; if (hatches[i] == NULL) { switch (style) { case wxBRUSHSTYLE_BDIAGONAL_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, bdiag_bits, bdiag_width, bdiag_height); break; case wxBRUSHSTYLE_CROSSDIAG_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, cdiag_bits, cdiag_width, cdiag_height); break; case wxBRUSHSTYLE_CROSS_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, cross_bits, cross_width, cross_height); break; case wxBRUSHSTYLE_FDIAGONAL_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, fdiag_bits, fdiag_width, fdiag_height); break; case wxBRUSHSTYLE_HORIZONTAL_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, horiz_bits, horiz_width, horiz_height); break; case wxBRUSHSTYLE_VERTICAL_HATCH: hatches[i] = gdk_bitmap_create_from_data(NULL, verti_bits, verti_width, verti_height); break; } } return hatches[i]; } //----------------------------------------------------------------------------- // Implement Pool of Graphic contexts. Creating them takes too much time. //----------------------------------------------------------------------------- enum wxPoolGCType { wxGC_ERROR = 0, wxTEXT_MONO, wxBG_MONO, wxPEN_MONO, wxBRUSH_MONO, wxTEXT_COLOUR, wxBG_COLOUR, wxPEN_COLOUR, wxBRUSH_COLOUR, wxTEXT_SCREEN, wxBG_SCREEN, wxPEN_SCREEN, wxBRUSH_SCREEN }; struct wxGC { GdkGC *m_gc; wxPoolGCType m_type; bool m_used; }; #define GC_POOL_ALLOC_SIZE 100 static int wxGCPoolSize = 0; static wxGC *wxGCPool = NULL; static void wxInitGCPool() { // This really could wait until the first call to // wxGetPoolGC, but we will make the first allocation // now when other initialization is being performed. // Set initial pool size. wxGCPoolSize = GC_POOL_ALLOC_SIZE; // Allocate initial pool. wxGCPool = (wxGC *)malloc(wxGCPoolSize * sizeof(wxGC)); if (wxGCPool == NULL) { // If we cannot malloc, then fail with error // when debug is enabled. If debug is not enabled, // the problem will eventually get caught // in wxGetPoolGC. wxFAIL_MSG( wxT("Cannot allocate GC pool") ); return; } // Zero initial pool. memset(wxGCPool, 0, wxGCPoolSize * sizeof(wxGC)); } static void wxCleanUpGCPool() { for (int i = 0; i < wxGCPoolSize; i++) { if (wxGCPool[i].m_gc) g_object_unref (wxGCPool[i].m_gc); } free(wxGCPool); wxGCPool = NULL; wxGCPoolSize = 0; } static GdkGC* wxGetPoolGC( GdkWindow *window, wxPoolGCType type ) { wxGC *pptr; // Look for an available GC. for (int i = 0; i < wxGCPoolSize; i++) { if (!wxGCPool[i].m_gc) { wxGCPool[i].m_gc = gdk_gc_new( window ); gdk_gc_set_exposures( wxGCPool[i].m_gc, FALSE ); wxGCPool[i].m_type = type; wxGCPool[i].m_used = false; } if ((!wxGCPool[i].m_used) && (wxGCPool[i].m_type == type)) { wxGCPool[i].m_used = true; return wxGCPool[i].m_gc; } } // We did not find an available GC. // We need to grow the GC pool. pptr = (wxGC *)realloc(wxGCPool, (wxGCPoolSize + GC_POOL_ALLOC_SIZE)*sizeof(wxGC)); if (pptr != NULL) { // Initialize newly allocated pool. wxGCPool = pptr; memset(&wxGCPool[wxGCPoolSize], 0, GC_POOL_ALLOC_SIZE*sizeof(wxGC)); // Initialize entry we will return. wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window ); gdk_gc_set_exposures( wxGCPool[wxGCPoolSize].m_gc, FALSE ); wxGCPool[wxGCPoolSize].m_type = type; wxGCPool[wxGCPoolSize].m_used = true; // Set new value of pool size. wxGCPoolSize += GC_POOL_ALLOC_SIZE; // Return newly allocated entry. return wxGCPool[wxGCPoolSize-GC_POOL_ALLOC_SIZE].m_gc; } // The realloc failed. Fall through to error. wxFAIL_MSG( wxT("No GC available") ); return NULL; } static void wxFreePoolGC( GdkGC *gc ) { for (int i = 0; i < wxGCPoolSize; i++) { if (wxGCPool[i].m_gc == gc) { wxGCPool[i].m_used = false; return; } } wxFAIL_MSG( wxT("Wrong GC") ); } //----------------------------------------------------------------------------- // wxWindowDC //----------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxWindowDCImpl, wxGTKDCImpl) wxWindowDCImpl::wxWindowDCImpl( wxDC *owner ) : wxGTKDCImpl( owner ) { m_gdkwindow = NULL; m_penGC = NULL; m_brushGC = NULL; m_textGC = NULL; m_bgGC = NULL; m_cmap = NULL; m_isScreenDC = false; m_context = NULL; m_layout = NULL; m_fontdesc = NULL; } wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) : wxGTKDCImpl( owner ) { wxASSERT_MSG( window, wxT("DC needs a window") ); m_gdkwindow = NULL; m_penGC = NULL; m_brushGC = NULL; m_textGC = NULL; m_bgGC = NULL; m_cmap = NULL; m_isScreenDC = false; m_font = window->GetFont(); GtkWidget *widget = window->m_wxwindow; m_gdkwindow = window->GTKGetDrawingWindow(); // Some controls don't have m_wxwindow - like wxStaticBox, but the user // code should still be able to create wxClientDCs for them if ( !widget ) { widget = window->m_widget; wxCHECK_RET(widget, "DC needs a widget"); m_gdkwindow = widget->window; if (GTK_WIDGET_NO_WINDOW(widget)) SetDeviceLocalOrigin(widget->allocation.x, widget->allocation.y); } m_context = window->GTKGetPangoDefaultContext(); m_layout = pango_layout_new( m_context ); m_fontdesc = pango_font_description_copy( widget->style->font_desc ); // Window not realized ? if (!m_gdkwindow) { // Don't report problems as per MSW. m_ok = true; return; } m_cmap = gtk_widget_get_colormap(widget); SetUpDC(); /* this must be done after SetUpDC, bacause SetUpDC calls the repective SetBrush, SetPen, SetBackground etc functions to set up the DC. SetBackground call m_owner->SetBackground and this might not be desired as the standard dc background is white whereas a window might assume gray to be the standard (as e.g. wxStatusBar) */ m_window = window; if (m_window && m_window->m_wxwindow && (m_window->GetLayoutDirection() == wxLayout_RightToLeft)) { // reverse sense m_signX = -1; // origin in the upper right corner m_deviceOriginX = m_window->GetClientSize().x; } } wxWindowDCImpl::~wxWindowDCImpl() { Destroy(); if (m_layout) g_object_unref (m_layout); if (m_fontdesc) pango_font_description_free( m_fontdesc ); } void wxWindowDCImpl::SetUpDC( bool isMemDC ) { m_ok = true; wxASSERT_MSG( !m_penGC, wxT("GCs already created") ); bool done = false; if ((isMemDC) && (GetSelectedBitmap().IsOk())) { if (GetSelectedBitmap().GetDepth() == 1) { m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_MONO ); m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_MONO ); m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_MONO ); m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_MONO ); done = true; } } if (!done) { if (m_isScreenDC) { m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_SCREEN ); m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_SCREEN ); m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_SCREEN ); m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_SCREEN ); } else { m_penGC = wxGetPoolGC( m_gdkwindow, wxPEN_COLOUR ); m_brushGC = wxGetPoolGC( m_gdkwindow, wxBRUSH_COLOUR ); m_textGC = wxGetPoolGC( m_gdkwindow, wxTEXT_COLOUR ); m_bgGC = wxGetPoolGC( m_gdkwindow, wxBG_COLOUR ); } } /* background colour */ m_backgroundBrush = *wxWHITE_BRUSH; m_backgroundBrush.GetColour().CalcPixel( m_cmap ); const GdkColor *bg_col = m_backgroundBrush.GetColour().GetColor(); /* m_textGC */ m_textForegroundColour.CalcPixel( m_cmap ); gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() ); m_textBackgroundColour.CalcPixel( m_cmap ); gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() ); gdk_gc_set_fill( m_textGC, GDK_SOLID ); gdk_gc_set_colormap( m_textGC, m_cmap ); /* m_penGC */ m_pen.GetColour().CalcPixel( m_cmap ); gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() ); gdk_gc_set_background( m_penGC, bg_col ); gdk_gc_set_line_attributes( m_penGC, 0, GDK_LINE_SOLID, GDK_CAP_NOT_LAST, GDK_JOIN_ROUND ); /* m_brushGC */ m_brush.GetColour().CalcPixel( m_cmap ); gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() ); gdk_gc_set_background( m_brushGC, bg_col ); gdk_gc_set_fill( m_brushGC, GDK_SOLID ); /* m_bgGC */ gdk_gc_set_background( m_bgGC, bg_col ); gdk_gc_set_foreground( m_bgGC, bg_col ); gdk_gc_set_fill( m_bgGC, GDK_SOLID ); /* ROPs */ gdk_gc_set_function( m_textGC, GDK_COPY ); gdk_gc_set_function( m_brushGC, GDK_COPY ); gdk_gc_set_function( m_penGC, GDK_COPY ); /* clipping */ gdk_gc_set_clip_rectangle( m_penGC, NULL ); gdk_gc_set_clip_rectangle( m_brushGC, NULL ); gdk_gc_set_clip_rectangle( m_textGC, NULL ); gdk_gc_set_clip_rectangle( m_bgGC, NULL ); } void wxWindowDCImpl::DoGetSize( int* width, int* height ) const { wxCHECK_RET( m_window, wxT("GetSize() doesn't work without window") ); m_window->GetSize(width, height); } bool wxWindowDCImpl::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, wxFloodFillStyle style) { #if wxUSE_IMAGE extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y, const wxColour & col, wxFloodFillStyle style); return wxDoFloodFill( GetOwner(), x, y, col, style); #else wxUnusedVar(x); wxUnusedVar(y); wxUnusedVar(col); wxUnusedVar(style); return false; #endif } bool wxWindowDCImpl::DoGetPixel( wxCoord x1, wxCoord y1, wxColour *col ) const { GdkImage* image = NULL; if (m_gdkwindow) { const int x = LogicalToDeviceX(x1); const int y = LogicalToDeviceY(y1); wxRect rect; gdk_drawable_get_size(m_gdkwindow, &rect.width, &rect.height); if (rect.Contains(x, y)) image = gdk_drawable_get_image(m_gdkwindow, x, y, 1, 1); } if (image == NULL) { *col = wxColour(); return false; } GdkColormap* colormap = gdk_image_get_colormap(image); const unsigned pixel = gdk_image_get_pixel(image, 0, 0); if (colormap == NULL) *col = pixel ? m_textForegroundColour : m_textBackgroundColour; else { GdkColor c; gdk_colormap_query_color(colormap, pixel, &c); col->Set(c.red >> 8, c.green >> 8, c.blue >> 8); } g_object_unref(image); return true; } void wxWindowDCImpl::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if ( m_pen.IsNonTransparent() ) { if (m_gdkwindow) gdk_draw_line( m_gdkwindow, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) ); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } } void wxWindowDCImpl::DoCrossHair( wxCoord x, wxCoord y ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if ( m_pen.IsNonTransparent() ) { int w = 0; int h = 0; GetOwner()->GetSize( &w, &h ); wxCoord xx = XLOG2DEV(x); wxCoord yy = YLOG2DEV(y); if (m_gdkwindow) { gdk_draw_line( m_gdkwindow, m_penGC, 0, yy, XLOG2DEVREL(w), yy ); gdk_draw_line( m_gdkwindow, m_penGC, xx, 0, xx, YLOG2DEVREL(h) ); } } } void wxWindowDCImpl::DrawingSetup(GdkGC*& gc, bool& originChanged) { gc = m_brushGC; GdkPixmap* pixmap = NULL; const int style = m_brush.GetStyle(); if (style == wxBRUSHSTYLE_STIPPLE || style == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE) { const wxBitmap* stipple = m_brush.GetStipple(); if (stipple->IsOk()) { if (style == wxBRUSHSTYLE_STIPPLE) pixmap = stipple->GetPixmap(); else if (stipple->GetMask()) { pixmap = stipple->GetPixmap(); gc = m_textGC; } } } else if (m_brush.IsHatch()) { pixmap = GetHatch(style); } int origin_x = 0; int origin_y = 0; if (pixmap) { int w, h; gdk_drawable_get_size(pixmap, &w, &h); origin_x = m_deviceOriginX % w; origin_y = m_deviceOriginY % h; } originChanged = origin_x || origin_y; if (originChanged) gdk_gc_set_ts_origin(gc, origin_x, origin_y); } void wxWindowDCImpl::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCoord xx1 = XLOG2DEV(x1); wxCoord yy1 = YLOG2DEV(y1); wxCoord xx2 = XLOG2DEV(x2); wxCoord yy2 = YLOG2DEV(y2); wxCoord xxc = XLOG2DEV(xc); wxCoord yyc = YLOG2DEV(yc); double dx = xx1 - xxc; double dy = yy1 - yyc; double radius = sqrt((double)(dx*dx+dy*dy)); wxCoord r = (wxCoord)radius; double radius1, radius2; if (xx1 == xx2 && yy1 == yy2) { radius1 = 0.0; radius2 = 360.0; } else if ( wxIsNullDouble(radius) ) { radius1 = radius2 = 0.0; } else { radius1 = (xx1 - xxc == 0) ? (yy1 - yyc < 0) ? 90.0 : -90.0 : -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG; radius2 = (xx2 - xxc == 0) ? (yy2 - yyc < 0) ? 90.0 : -90.0 : -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG; } wxCoord alpha1 = wxCoord(radius1 * 64.0); wxCoord alpha2 = wxCoord((radius2 - radius1) * 64.0); while (alpha2 <= 0) alpha2 += 360*64; while (alpha1 > 360*64) alpha1 -= 360*64; if (m_gdkwindow) { if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); gdk_draw_arc(m_gdkwindow, gc, true, xxc-r, yyc-r, 2*r, 2*r, alpha1, alpha2); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) { gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xxc-r, yyc-r, 2*r,2*r, alpha1, alpha2 ); if ( m_brush.IsNonTransparent() && (alpha2 - alpha1 != 360*64) ) { gdk_draw_line( m_gdkwindow, m_penGC, xx1, yy1, xxc, yyc ); gdk_draw_line( m_gdkwindow, m_penGC, xxc, yyc, xx2, yy2 ); } } } CalcBoundingBox (x1, y1); CalcBoundingBox (x2, y2); } void wxWindowDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double sa, double ea ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCoord xx = XLOG2DEV(x); wxCoord yy = YLOG2DEV(y); wxCoord ww = m_signX * XLOG2DEVREL(width); wxCoord hh = m_signY * YLOG2DEVREL(height); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } if (m_gdkwindow) { wxCoord start = wxCoord(sa * 64.0); wxCoord end = wxCoord((ea-sa) * 64.0); if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, ww, hh, start, end); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, ww, hh, start, end ); } CalcBoundingBox (x, y); CalcBoundingBox (x + width, y + height); } void wxWindowDCImpl::DoDrawPoint( wxCoord x, wxCoord y ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if ( m_pen.IsNonTransparent() && m_gdkwindow ) gdk_draw_point( m_gdkwindow, m_penGC, XLOG2DEV(x), YLOG2DEV(y) ); CalcBoundingBox (x, y); } void wxWindowDCImpl::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (n <= 0) return; if ( m_pen.IsTransparent() ) return; //Check, if scaling is necessary const bool doScale = xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10; // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other GdkPoint* gpts = reinterpret_cast(points); if (doScale) gpts = new GdkPoint[n]; for (int i = 0; i < n; i++) { if (doScale) { gpts[i].x = XLOG2DEV(points[i].x + xoffset); gpts[i].y = YLOG2DEV(points[i].y + yoffset); } CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset); } if (m_gdkwindow) gdk_draw_lines( m_gdkwindow, m_penGC, gpts, n); if (doScale) delete[] gpts; } void wxWindowDCImpl::DoDrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, wxPolygonFillMode WXUNUSED(fillStyle) ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (n <= 0) return; //Check, if scaling is necessary const bool doScale = xoffset != 0 || yoffset != 0 || XLOG2DEV(10) != 10 || YLOG2DEV(10) != 10; // GdkPoint and wxPoint have the same memory layout, so we can cast one to the other GdkPoint* gdkpoints = reinterpret_cast(points); if (doScale) gdkpoints = new GdkPoint[n]; int i; for (i = 0 ; i < n ; i++) { if (doScale) { gdkpoints[i].x = XLOG2DEV(points[i].x + xoffset); gdkpoints[i].y = YLOG2DEV(points[i].y + yoffset); } CalcBoundingBox(points[i].x + xoffset, points[i].y + yoffset); } if (m_gdkwindow) { if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); gdk_draw_polygon(m_gdkwindow, gc, true, gdkpoints, n); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) { /* for (i = 0 ; i < n ; i++) { gdk_draw_line( m_gdkwindow, m_penGC, gdkpoints[i%n].x, gdkpoints[i%n].y, gdkpoints[(i+1)%n].x, gdkpoints[(i+1)%n].y); } */ gdk_draw_polygon( m_gdkwindow, m_penGC, FALSE, gdkpoints, n ); } } if (doScale) delete[] gdkpoints; } void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCoord xx = XLOG2DEV(x); wxCoord yy = YLOG2DEV(y); wxCoord ww = m_signX * XLOG2DEVREL(width); wxCoord hh = m_signY * YLOG2DEVREL(height); // CMB: draw nothing if transformed w or h is 0 if (ww == 0 || hh == 0) return; // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } if (m_gdkwindow) { if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); gdk_draw_rectangle(m_gdkwindow, gc, true, xx, yy, ww, hh); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) { if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) && (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxPENSTYLE_SOLID)) { // Use 2 1-line rects instead gdk_gc_set_line_attributes( m_penGC, 1, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND ); if (m_signX == -1) { // Different for RTL gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx+1, yy, ww-2, hh-2 ); gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy-1, ww, hh ); } else { gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-2, hh-2 ); gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx-1, yy-1, ww, hh ); } // reset gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND ); } else { // Just use X11 for other cases gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-1, hh-1 ); } } } CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (radius < 0.0) radius = - radius * ((width < height) ? width : height); wxCoord xx = XLOG2DEV(x); wxCoord yy = YLOG2DEV(y); wxCoord ww = m_signX * XLOG2DEVREL(width); wxCoord hh = m_signY * YLOG2DEVREL(height); wxCoord rr = XLOG2DEVREL((wxCoord)radius); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } // CMB: if radius is zero use DrawRectangle() instead to avoid // X drawing errors with small radii if (rr == 0) { DoDrawRectangle( x, y, width, height ); return; } // CMB: draw nothing if transformed w or h is 0 if (ww == 0 || hh == 0) return; // CMB: adjust size if outline is drawn otherwise the result is // 1 pixel too wide and high if ( m_pen.IsNonTransparent() ) { ww--; hh--; } if (m_gdkwindow) { // CMB: ensure dd is not larger than rectangle otherwise we // get an hour glass shape wxCoord dd = 2 * rr; if (dd > ww) dd = ww; if (dd > hh) dd = hh; rr = dd / 2; if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); gdk_draw_rectangle(m_gdkwindow, gc, true, xx+rr, yy, ww-dd+1, hh); gdk_draw_rectangle(m_gdkwindow, gc, true, xx, yy+rr, ww, hh-dd+1); gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, dd, dd, 90*64, 90*64); gdk_draw_arc(m_gdkwindow, gc, true, xx+ww-dd, yy, dd, dd, 0, 90*64); gdk_draw_arc(m_gdkwindow, gc, true, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64); gdk_draw_arc(m_gdkwindow, gc, true, xx, yy+hh-dd, dd, dd, 180*64, 90*64); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) { gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy, xx+ww-rr, yy ); gdk_draw_line( m_gdkwindow, m_penGC, xx+rr+1, yy+hh, xx+ww-rr, yy+hh ); gdk_draw_line( m_gdkwindow, m_penGC, xx, yy+rr+1, xx, yy+hh-rr ); gdk_draw_line( m_gdkwindow, m_penGC, xx+ww, yy+rr+1, xx+ww, yy+hh-rr ); gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, dd, dd, 90*64, 90*64 ); gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy, dd, dd, 0, 90*64 ); gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx+ww-dd, yy+hh-dd, dd, dd, 270*64, 90*64 ); gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy+hh-dd, dd, dd, 180*64, 90*64 ); } } // this ignores the radius CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord height ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCoord xx = XLOG2DEV(x); wxCoord yy = YLOG2DEV(y); wxCoord ww = m_signX * XLOG2DEVREL(width); wxCoord hh = m_signY * YLOG2DEVREL(height); // CMB: handle -ve width and/or height if (ww < 0) { ww = -ww; xx = xx - ww; } if (hh < 0) { hh = -hh; yy = yy - hh; } if (m_gdkwindow) { if ( m_brush.IsNonTransparent() ) { GdkGC* gc; bool originChanged; DrawingSetup(gc, originChanged); // If the pen is transparent pen we increase the size // for better compatibility with other platforms. if ( m_pen.IsNonTransparent() ) { ++ww; ++hh; } gdk_draw_arc(m_gdkwindow, gc, true, xx, yy, ww, hh, 0, 360*64); if (originChanged) gdk_gc_set_ts_origin(gc, 0, 0); } if ( m_pen.IsNonTransparent() ) gdk_draw_arc( m_gdkwindow, m_penGC, false, xx, yy, ww, hh, 0, 360*64 ); } CalcBoundingBox( x, y ); CalcBoundingBox( x + width, y + height ); } void wxWindowDCImpl::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y ) { // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why DoDrawBitmap( (const wxBitmap&)icon, x, y, true ); } // scale a pixbuf, return new pixbuf, unref old one static GdkPixbuf* Scale(GdkPixbuf* pixbuf, int dst_w, int dst_h, double sx, double sy) { GdkPixbuf* pixbuf_scaled = gdk_pixbuf_new( GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf), 8, dst_w, dst_h); gdk_pixbuf_scale(pixbuf, pixbuf_scaled, 0, 0, dst_w, dst_h, 0, 0, sx, sy, GDK_INTERP_NEAREST); g_object_unref(pixbuf); return pixbuf_scaled; } // scale part of a pixmap using pixbuf scaling, return pixbuf static GdkPixbuf* Scale(GdkPixmap* pixmap, int x, int y, int w, int h, int dst_w, int dst_h, double sx, double sy) { GdkPixbuf* pixbuf = gdk_pixbuf_get_from_drawable( NULL, pixmap, NULL, x, y, 0, 0, w, h); return Scale(pixbuf, dst_w, dst_h, sx, sy); } // scale part of a mask pixmap, return new mask, unref old one static GdkPixmap* ScaleMask(GdkPixmap* mask, int x, int y, int w, int h, int dst_w, int dst_h, double sx, double sy) { GdkPixbuf* pixbuf = Scale(mask, x, y, w, h, dst_w, dst_h, sx, sy); // convert black and white pixbuf back to a mono pixmap const unsigned out_rowstride = (dst_w + 7) / 8; const size_t data_size = out_rowstride * size_t(dst_h); char* data = new char[data_size]; char* out = data; const guchar* row = gdk_pixbuf_get_pixels(pixbuf); const int rowstride = gdk_pixbuf_get_rowstride(pixbuf); memset(data, 0, data_size); for (int j = 0; j < dst_h; j++, row += rowstride, out += out_rowstride) { const guchar* in = row; for (int i = 0; i < dst_w; i++, in += 3) if (*in) out[i >> 3] |= 1 << (i & 7); } g_object_unref(pixbuf); GdkPixmap* pixmap = gdk_bitmap_create_from_data(mask, data, dst_w, dst_h); delete[] data; g_object_unref(mask); return pixmap; } // Make a new mask from part of a mask and a clip region. // Return new mask, unref old one. static GdkPixmap* ClipMask(GdkPixmap* mask, GdkRegion* clipRegion, int x, int y, int dst_x, int dst_y, int w, int h) { GdkGCValues gcValues; gcValues.foreground.pixel = 0; GdkGC* gc = gdk_gc_new_with_values(mask, &gcValues, GDK_GC_FOREGROUND); GdkPixmap* pixmap = gdk_pixmap_new(mask, w, h, 1); // clear new mask, so clipped areas will be masked gdk_draw_rectangle(pixmap, gc, true, 0, 0, w, h); gdk_gc_set_clip_region(gc, clipRegion); gdk_gc_set_clip_origin(gc, -dst_x, -dst_y); // draw old mask onto new one, with clip gdk_draw_drawable(pixmap, gc, mask, x, y, 0, 0, w, h); g_object_unref(gc); g_object_unref(mask); return pixmap; } // make a color pixmap from part of a mono one, using text fg/bg colors GdkPixmap* wxWindowDCImpl::MonoToColor(GdkPixmap* monoPixmap, int x, int y, int w, int h) const { GdkPixmap* pixmap = gdk_pixmap_new(m_gdkwindow, w, h, -1); GdkGCValues gcValues; gcValues.foreground.pixel = m_textForegroundColour.GetColor()->pixel; gcValues.background.pixel = m_textBackgroundColour.GetColor()->pixel; gcValues.stipple = monoPixmap; gcValues.fill = GDK_OPAQUE_STIPPLED; gcValues.ts_x_origin = -x; gcValues.ts_y_origin = -y; GdkGC* gc = gdk_gc_new_with_values(pixmap, &gcValues, GdkGCValuesMask( GDK_GC_FOREGROUND | GDK_GC_BACKGROUND | GDK_GC_STIPPLE | GDK_GC_FILL | GDK_GC_TS_X_ORIGIN | GDK_GC_TS_Y_ORIGIN)); gdk_draw_rectangle(pixmap, gc, true, 0, 0, w, h); g_object_unref(gc); return pixmap; } void wxWindowDCImpl::DoDrawBitmap( const wxBitmap &bitmap, wxCoord x, wxCoord y, bool useMask ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCHECK_RET( bitmap.IsOk(), wxT("invalid bitmap") ); if (!m_gdkwindow) return; const int w = bitmap.GetWidth(); const int h = bitmap.GetHeight(); // notice that as the bitmap is not drawn upside down (or right to left) // even if the corresponding axis direction is inversed, we need to take it // into account when calculating its bounding box CalcBoundingBox(x, y); CalcBoundingBox(x + m_signX*w, y + m_signY*h); // device coords int xx = LogicalToDeviceX(x); const int yy = LogicalToDeviceY(y); const int ww = LogicalToDeviceXRel(w); const int hh = LogicalToDeviceYRel(h); if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft) xx -= ww; GdkRegion* const clipRegion = m_currentClippingRegion.GetRegion(); // determine clip region overlap int overlap = wxInRegion; if (clipRegion) { overlap = m_currentClippingRegion.Contains(xx, yy, ww, hh); if (overlap == wxOutRegion) return; } const bool isScaled = ww != w || hh != h; const bool hasAlpha = bitmap.HasAlpha(); GdkGC* const use_gc = m_penGC; GdkPixmap* mask = NULL; // mask does not work when drawing a pixbuf with alpha if (useMask && !hasAlpha) { wxMask* m = bitmap.GetMask(); if (m) mask = m->GetBitmap(); } if (mask) { g_object_ref(mask); if (isScaled) mask = ScaleMask(mask, 0, 0, w, h, ww, hh, m_scaleX, m_scaleY); if (overlap == wxPartRegion) { // need a new mask that also masks the clipped area, // because gc can't have both a mask and a clip region mask = ClipMask(mask, clipRegion, 0, 0, xx, yy, ww, hh); } gdk_gc_set_clip_mask(use_gc, mask); gdk_gc_set_clip_origin(use_gc, xx, yy); } // determine whether to use pixmap or pixbuf GdkPixmap* pixmap = NULL; GdkPixbuf* pixbuf = NULL; if (bitmap.HasPixmap()) pixmap = bitmap.GetPixmap(); if (pixmap && gdk_drawable_get_depth(pixmap) == 1) { // convert mono pixmap to color using text fg/bg colors pixmap = MonoToColor(pixmap, 0, 0, w, h); } else if (hasAlpha || pixmap == NULL) { pixmap = NULL; pixbuf = bitmap.GetPixbuf(); g_object_ref(pixbuf); } else { g_object_ref(pixmap); } if (isScaled) { if (pixbuf) pixbuf = Scale(pixbuf, ww, hh, m_scaleX, m_scaleY); else pixbuf = Scale(pixmap, 0, 0, w, h, ww, hh, m_scaleX, m_scaleY); } if (pixbuf) { gdk_draw_pixbuf(m_gdkwindow, use_gc, pixbuf, 0, 0, xx, yy, ww, hh, GDK_RGB_DITHER_NORMAL, 0, 0); g_object_unref(pixbuf); } else { gdk_draw_drawable(m_gdkwindow, use_gc, pixmap, 0, 0, xx, yy, ww, hh); } if (pixmap) g_object_unref(pixmap); if (mask) { g_object_unref(mask); gdk_gc_set_clip_region(use_gc, clipRegion); } } bool wxWindowDCImpl::DoBlit( wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, wxRasterOperationMode logical_func, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask ) { wxCHECK_MSG( IsOk(), false, wxT("invalid window dc") ); wxCHECK_MSG( source, false, wxT("invalid source dc") ); if (!m_gdkwindow) return false; GdkDrawable* srcDrawable = NULL; GdkPixmap* mask = NULL; wxMemoryDC* memDC = wxDynamicCast(source, wxMemoryDC); if (memDC) { const wxBitmap& bitmap = memDC->GetSelectedBitmap(); if (!bitmap.IsOk()) return false; srcDrawable = bitmap.GetPixmap(); if (useMask) { wxMask* m = bitmap.GetMask(); if (m) mask = m->GetBitmap(); } } else { wxDCImpl* impl = source->GetImpl(); wxWindowDCImpl* gtk_impl = wxDynamicCast(impl, wxWindowDCImpl); if (gtk_impl) srcDrawable = gtk_impl->GetGDKWindow(); if (srcDrawable == NULL) return false; } CalcBoundingBox(xdest, ydest); CalcBoundingBox(xdest + width, ydest + height); // source device coords int src_x = source->LogicalToDeviceX(xsrc); int src_y = source->LogicalToDeviceY(ysrc); int src_w = source->LogicalToDeviceXRel(width); int src_h = source->LogicalToDeviceYRel(height); // Clip source rect to source dc. // Only necessary when scaling, to avoid GDK errors when // converting to pixbuf, but no harm in always doing it. // If source rect changes, it also changes the dest rect. wxRect clip; gdk_drawable_get_size(srcDrawable, &clip.width, &clip.height); clip.Intersect(wxRect(src_x, src_y, src_w, src_h)); if (src_w != clip.width || src_h != clip.height) { if (clip.width == 0) return true; src_w = clip.width; src_h = clip.height; width = source->DeviceToLogicalXRel(src_w); height = source->DeviceToLogicalYRel(src_h); if (src_x != clip.x || src_y != clip.y) { xdest += source->DeviceToLogicalXRel(clip.x - src_x); ydest += source->DeviceToLogicalYRel(clip.y - src_y); src_x = clip.x; src_y = clip.y; } } // destination device coords const int dst_x = LogicalToDeviceX(xdest); const int dst_y = LogicalToDeviceY(ydest); const int dst_w = LogicalToDeviceXRel(width); const int dst_h = LogicalToDeviceYRel(height); GdkRegion* const clipRegion = m_currentClippingRegion.GetRegion(); // determine dest clip region overlap int overlap = wxInRegion; if (clipRegion) { overlap = m_currentClippingRegion.Contains(dst_x, dst_y, dst_w, dst_h); if (overlap == wxOutRegion) return true; } const bool isScaled = src_w != dst_w || src_h != dst_h; double scale_x = 0; double scale_y = 0; if (isScaled) { // get source to dest scale double usx, usy, lsx, lsy; source->GetUserScale(&usx, &usy); source->GetLogicalScale(&lsx, &lsy); scale_x = m_scaleX / (usx * lsx); scale_y = m_scaleY / (usy * lsy); } GdkGC* const use_gc = m_penGC; if (mask) { g_object_ref(mask); int srcMask_x = src_x; int srcMask_y = src_y; if (xsrcMask != -1 || ysrcMask != -1) { srcMask_x = source->LogicalToDeviceX(xsrcMask); srcMask_y = source->LogicalToDeviceY(ysrcMask); } if (isScaled) { mask = ScaleMask(mask, srcMask_x, srcMask_y, src_w, src_h, dst_w, dst_h, scale_x, scale_y); srcMask_x = 0; srcMask_y = 0; } if (overlap == wxPartRegion) { // need a new mask that also masks the clipped area, // because gc can't have both a mask and a clip region mask = ClipMask(mask, clipRegion, srcMask_x, srcMask_y, dst_x, dst_y, dst_w, dst_h); srcMask_x = 0; srcMask_y = 0; } gdk_gc_set_clip_mask(use_gc, mask); gdk_gc_set_clip_origin(use_gc, dst_x - srcMask_x, dst_y - srcMask_y); } GdkPixmap* pixmap = NULL; if (gdk_drawable_get_depth(srcDrawable) == 1) { // Convert mono pixmap to color using text fg/bg colors. // Scaling/drawing is simpler if this is done first. pixmap = MonoToColor(srcDrawable, src_x, src_y, src_w, src_h); srcDrawable = pixmap; src_x = 0; src_y = 0; } const wxRasterOperationMode logical_func_save = m_logicalFunction; SetLogicalFunction(logical_func); if (memDC == NULL) gdk_gc_set_subwindow(use_gc, GDK_INCLUDE_INFERIORS); if (isScaled) { GdkPixbuf* pixbuf = Scale(srcDrawable, src_x, src_y, src_w, src_h, dst_w, dst_h, scale_x, scale_y); gdk_draw_pixbuf(m_gdkwindow, use_gc, pixbuf, 0, 0, dst_x, dst_y, dst_w, dst_h, GDK_RGB_DITHER_NONE, 0, 0); g_object_unref(pixbuf); } else { gdk_draw_drawable(m_gdkwindow, use_gc, srcDrawable, src_x, src_y, dst_x, dst_y, dst_w, dst_h); } SetLogicalFunction(logical_func_save); if (memDC == NULL) gdk_gc_set_subwindow(use_gc, GDK_CLIP_BY_CHILDREN); if (pixmap) g_object_unref(pixmap); if (mask) { g_object_unref(mask); gdk_gc_set_clip_region(use_gc, clipRegion); } return true; } void wxWindowDCImpl::DoDrawText(const wxString& text, wxCoord xLogical, wxCoord yLogical) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (!m_gdkwindow) return; if (text.empty()) return; wxCoord x = XLOG2DEV(xLogical), y = YLOG2DEV(yLogical); wxCHECK_RET( m_context, wxT("no Pango context") ); wxCHECK_RET( m_layout, wxT("no Pango layout") ); wxCHECK_RET( m_fontdesc, wxT("no Pango font description") ); gdk_pango_context_set_colormap( m_context, m_cmap ); // not needed in gtk+ >= 2.6 bool underlined = m_font.IsOk() && m_font.GetUnderlined(); wxCharBuffer data = wxGTK_CONV(text); if ( !data ) return; size_t datalen = strlen(data); // in Pango >= 1.16 the "underline of leading/trailing spaces" bug // has been fixed and thus the hack implemented below should never be used static bool pangoOk = !wx_pango_version_check(1, 16, 0); bool needshack = underlined && !pangoOk; if (needshack) { // a PangoLayout which has leading/trailing spaces with underlined font // is not correctly drawn by this pango version: Pango won't underline the spaces. // This can be a problem; e.g. wxHTML rendering of underlined text relies on // this behaviour. To workaround this problem, we use a special hack here // suggested by pango maintainer Behdad Esfahbod: we prepend and append two // empty space characters and give them a dummy colour attribute. // This will force Pango to underline the leading/trailing spaces, too. wxCharBuffer data_tmp(datalen + 6); // copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format memcpy(data_tmp.data(), "\342\200\214", 3); // copy the user string memcpy(data_tmp.data() + 3, data, datalen); // copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format memcpy(data_tmp.data() + 3 + datalen, "\342\200\214", 3); data = data_tmp; datalen += 6; } pango_layout_set_text(m_layout, data, datalen); if (underlined) { PangoAttrList *attrs = pango_attr_list_new(); PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); a->start_index = 0; a->end_index = datalen; pango_attr_list_insert(attrs, a); if (needshack) { // dummy colour for the leading space a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614); a->start_index = 0; a->end_index = 1; pango_attr_list_insert(attrs, a); // dummy colour for the trailing space a = pango_attr_foreground_new (0x0057, 0x52A9, 0xD614); a->start_index = datalen - 1; a->end_index = datalen; pango_attr_list_insert(attrs, a); } pango_layout_set_attributes(m_layout, attrs); pango_attr_list_unref(attrs); } int oldSize = 0; const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001; if (isScaled) { // If there is a user or actually any scale applied to // the device context, scale the font. // scale font description oldSize = pango_font_description_get_size(m_fontdesc); pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY)); // actually apply scaled font pango_layout_set_font_description( m_layout, m_fontdesc ); } int w, h; pango_layout_get_pixel_size(m_layout, &w, &h); // Draw layout. int x_rtl = x; if (m_window && m_window->GetLayoutDirection() == wxLayout_RightToLeft) x_rtl -= w; const GdkColor* bg_col = NULL; if (m_backgroundMode == wxBRUSHSTYLE_SOLID) bg_col = m_textBackgroundColour.GetColor(); gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x_rtl, y, m_layout, NULL, bg_col); if (isScaled) { // reset unscaled size pango_font_description_set_size( m_fontdesc, oldSize ); // actually apply unscaled font pango_layout_set_font_description( m_layout, m_fontdesc ); } if (underlined) { // undo underline attributes setting: pango_layout_set_attributes(m_layout, NULL); } CalcBoundingBox(xLogical + int(w / m_scaleX), yLogical + int(h / m_scaleY)); CalcBoundingBox(xLogical, yLogical); } // TODO: When GTK2.6 is required, merge DoDrawText and DoDrawRotatedText to // avoid code duplication void wxWindowDCImpl::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle ) { if (!m_gdkwindow || text.empty()) return; wxCHECK_RET( IsOk(), wxT("invalid window dc") ); #if __WXGTK26__ if (!gtk_check_version(2,6,0)) { x = XLOG2DEV(x); y = YLOG2DEV(y); pango_layout_set_text(m_layout, wxGTK_CONV(text), -1); if (m_font.GetUnderlined()) { PangoAttrList *attrs = pango_attr_list_new(); PangoAttribute *a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); pango_attr_list_insert(attrs, a); pango_layout_set_attributes(m_layout, attrs); pango_attr_list_unref(attrs); } int oldSize = 0; const bool isScaled = fabs(m_scaleY - 1.0) > 0.00001; if (isScaled) { //TODO: when Pango >= 1.6 is required, use pango_matrix_scale() // If there is a user or actually any scale applied to // the device context, scale the font. // scale font description oldSize = pango_font_description_get_size(m_fontdesc); pango_font_description_set_size(m_fontdesc, int(oldSize * m_scaleY)); // actually apply scaled font pango_layout_set_font_description( m_layout, m_fontdesc ); } int w, h; pango_layout_get_pixel_size(m_layout, &w, &h); const GdkColor* bg_col = NULL; if (m_backgroundMode == wxBRUSHSTYLE_SOLID) bg_col = m_textBackgroundColour.GetColor(); // rotate the text PangoMatrix matrix = PANGO_MATRIX_INIT; pango_matrix_rotate (&matrix, angle); pango_context_set_matrix (m_context, &matrix); pango_layout_context_changed (m_layout); // To be compatible with MSW, the rotation axis must be in the old // top-left corner. // Calculate the vertices of the rotated rectangle containing the text, // relative to the old top-left vertex. // We could use the matrix for this, but it's simpler with trignonometry. double rad = DegToRad(angle); // the rectangle vertices are counted clockwise with the first one // being at (0, 0) double x2 = w * cos(rad); double y2 = -w * sin(rad); // y axis points to the bottom, hence minus double x4 = h * sin(rad); double y4 = h * cos(rad); double x3 = x4 + x2; double y3 = y4 + y2; // Then we calculate max and min of the rotated rectangle. wxCoord maxX = (wxCoord)(dmax(dmax(0, x2), dmax(x3, x4)) + 0.5), maxY = (wxCoord)(dmax(dmax(0, y2), dmax(y3, y4)) + 0.5), minX = (wxCoord)(dmin(dmin(0, x2), dmin(x3, x4)) - 0.5), minY = (wxCoord)(dmin(dmin(0, y2), dmin(y3, y4)) - 0.5); gdk_draw_layout_with_colors(m_gdkwindow, m_textGC, x+minX, y+minY, m_layout, NULL, bg_col); if (m_font.GetUnderlined()) pango_layout_set_attributes(m_layout, NULL); // clean up the transformation matrix pango_context_set_matrix(m_context, NULL); if (isScaled) { // reset unscaled size pango_font_description_set_size( m_fontdesc, oldSize ); // actually apply unscaled font pango_layout_set_font_description( m_layout, m_fontdesc ); } CalcBoundingBox(x+minX, y+minY); CalcBoundingBox(x+maxX, y+maxY); } else #endif //__WXGTK26__ { #if wxUSE_IMAGE if ( wxIsNullDouble(angle) ) { DoDrawText(text, x, y); return; } wxCoord w; wxCoord h; // TODO: implement later without GdkFont for GTK 2.0 DoGetTextExtent(text, &w, &h, NULL,NULL, &m_font); // draw the string normally wxBitmap src(w, h); wxMemoryDC dc; dc.SelectObject(src); dc.SetFont(GetFont()); dc.SetBackground(*wxBLACK_BRUSH); dc.SetBrush(*wxBLACK_BRUSH); dc.Clear(); dc.SetTextForeground( *wxWHITE ); dc.DrawText(text, 0, 0); dc.SelectObject(wxNullBitmap); // Calculate the size of the rotated bounding box. double rad = DegToRad(angle); double dx = cos(rad), dy = sin(rad); // the rectngle vertices are counted clockwise with the first one being at // (0, 0) (or, rather, at (x, y)) double x2 = w*dx, y2 = -w*dy; // y axis points to the bottom, hence minus double x4 = h*dy, y4 = h*dx; double x3 = x4 + x2, y3 = y4 + y2; // calc max and min wxCoord maxX = (wxCoord)(dmax(x2, dmax(x3, x4)) + 0.5), maxY = (wxCoord)(dmax(y2, dmax(y3, y4)) + 0.5), minX = (wxCoord)(dmin(x2, dmin(x3, x4)) - 0.5), minY = (wxCoord)(dmin(y2, dmin(y3, y4)) - 0.5); wxImage image = src.ConvertToImage(); image.ConvertColourToAlpha( m_textForegroundColour.Red(), m_textForegroundColour.Green(), m_textForegroundColour.Blue() ); image = image.Rotate( rad, wxPoint(0,0) ); int i_angle = (int) angle; i_angle = i_angle % 360; if (i_angle < 0) i_angle += 360; int xoffset = 0; if ((i_angle >= 90.0) && (i_angle < 270.0)) xoffset = image.GetWidth(); int yoffset = 0; if ((i_angle >= 0.0) && (i_angle < 180.0)) yoffset = image.GetHeight(); if ((i_angle >= 0) && (i_angle < 90)) yoffset -= (int)( cos(rad)*h ); if ((i_angle >= 90) && (i_angle < 180)) xoffset -= (int)( sin(rad)*h ); if ((i_angle >= 180) && (i_angle < 270)) yoffset -= (int)( cos(rad)*h ); if ((i_angle >= 270) && (i_angle < 360)) xoffset -= (int)( sin(rad)*h ); int i_x = x - xoffset; int i_y = y - yoffset; src = image; DoDrawBitmap( src, i_x, i_y, true ); // it would be better to draw with non underlined font and draw the line // manually here (it would be more straight...) #if 0 if ( m_font.GetUnderlined() ) { gdk_draw_line( m_gdkwindow, m_textGC, XLOG2DEV(x + x4), YLOG2DEV(y + y4 + font->descent), XLOG2DEV(x + x3), YLOG2DEV(y + y3 + font->descent)); } #endif // 0 // update the bounding box CalcBoundingBox(x + minX, y + minY); CalcBoundingBox(x + maxX, y + maxY); #else // !wxUSE_IMAGE wxUnusedVar(text); wxUnusedVar(x); wxUnusedVar(y); wxUnusedVar(angle); #endif // wxUSE_IMAGE/!wxUSE_IMAGE } } void wxWindowDCImpl::DoGetTextExtent(const wxString &string, wxCoord *width, wxCoord *height, wxCoord *descent, wxCoord *externalLeading, const wxFont *theFont) const { if ( width ) *width = 0; if ( height ) *height = 0; if ( descent ) *descent = 0; if ( externalLeading ) *externalLeading = 0; if (string.empty()) return; // ensure that theFont is always non-NULL if ( !theFont || !theFont->IsOk() ) theFont = &m_font; // and use it if it's valid if ( theFont->IsOk() ) { pango_layout_set_font_description ( m_layout, theFont->GetNativeFontInfo()->description ); } // Set layout's text const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(string, *theFont); if ( !dataUTF8 ) { // hardly ideal, but what else can we do if conversion failed? return; } pango_layout_set_text(m_layout, dataUTF8, -1); int h; pango_layout_get_pixel_size(m_layout, width, &h); if (descent) { PangoLayoutIter *iter = pango_layout_get_iter(m_layout); int baseline = pango_layout_iter_get_baseline(iter); pango_layout_iter_free(iter); *descent = h - PANGO_PIXELS(baseline); } if (height) *height = h; // Reset old font description if (theFont->IsOk()) pango_layout_set_font_description( m_layout, m_fontdesc ); } bool wxWindowDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const { const size_t len = text.length(); widths.Empty(); widths.Add(0, len); if (text.empty()) return true; // Set layout's text const wxCharBuffer dataUTF8 = wxGTK_CONV_FONT(text, m_font); if ( !dataUTF8 ) { // hardly ideal, but what else can we do if conversion failed? wxLogLastError(wxT("DoGetPartialTextExtents")); return false; } pango_layout_set_text(m_layout, dataUTF8, -1); // Calculate the position of each character based on the widths of // the previous characters // Code borrowed from Scintilla's PlatGTK PangoLayoutIter *iter = pango_layout_get_iter(m_layout); PangoRectangle pos; pango_layout_iter_get_cluster_extents(iter, NULL, &pos); size_t i = 0; while (pango_layout_iter_next_cluster(iter)) { pango_layout_iter_get_cluster_extents(iter, NULL, &pos); int position = PANGO_PIXELS(pos.x); widths[i++] = position; } while (i < len) widths[i++] = PANGO_PIXELS(pos.x + pos.width); pango_layout_iter_free(iter); return true; } wxCoord wxWindowDCImpl::GetCharWidth() const { pango_layout_set_text( m_layout, "H", 1 ); int w; pango_layout_get_pixel_size( m_layout, &w, NULL ); return w; } wxCoord wxWindowDCImpl::GetCharHeight() const { PangoFontMetrics *metrics = pango_context_get_metrics (m_context, m_fontdesc, pango_context_get_language(m_context)); wxCHECK_MSG( metrics, -1, wxT("failed to get pango font metrics") ); wxCoord h = PANGO_PIXELS (pango_font_metrics_get_descent (metrics) + pango_font_metrics_get_ascent (metrics)); pango_font_metrics_unref (metrics); return h; } void wxWindowDCImpl::Clear() { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (!m_gdkwindow) return; int width,height; DoGetSize( &width, &height ); gdk_draw_rectangle( m_gdkwindow, m_bgGC, TRUE, 0, 0, width, height ); } void wxWindowDCImpl::SetFont( const wxFont &font ) { m_font = font; if (m_font.IsOk()) { if (m_fontdesc) pango_font_description_free( m_fontdesc ); m_fontdesc = pango_font_description_copy( m_font.GetNativeFontInfo()->description ); if (m_window) { PangoContext *oldContext = m_context; m_context = m_window->GTKGetPangoDefaultContext(); // If we switch back/forth between different contexts // we also have to create a new layout. I think so, // at least, and it doesn't hurt to do it. if (oldContext != m_context) { if (m_layout) g_object_unref (m_layout); m_layout = pango_layout_new( m_context ); } } pango_layout_set_font_description( m_layout, m_fontdesc ); } } void wxWindowDCImpl::SetPen( const wxPen &pen ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (m_pen == pen) return; m_pen = pen; if (!m_pen.IsOk()) return; if (!m_gdkwindow) return; gint width = m_pen.GetWidth(); if (width <= 0) { // CMB: if width is non-zero scale it with the dc width = 1; } else { // X doesn't allow different width in x and y and so we take // the average double w = 0.5 + ( fabs((double) XLOG2DEVREL(width)) + fabs((double) YLOG2DEVREL(width)) ) / 2.0; width = (int)w; if ( !width ) { // width can't be 0 or an internal GTK error occurs inside // gdk_gc_set_dashes() below width = 1; } } static const wxGTKDash dotted[] = {1, 1}; static const wxGTKDash short_dashed[] = {2, 2}; static const wxGTKDash wxCoord_dashed[] = {2, 4}; static const wxGTKDash dotted_dashed[] = {3, 3, 1, 3}; // We express dash pattern in pen width unit, so we are // independent of zoom factor and so on... int req_nb_dash; const wxGTKDash *req_dash; GdkLineStyle lineStyle = GDK_LINE_ON_OFF_DASH; switch (m_pen.GetStyle()) { case wxPENSTYLE_USER_DASH: req_nb_dash = m_pen.GetDashCount(); req_dash = (wxGTKDash*)m_pen.GetDash(); break; case wxPENSTYLE_DOT: req_nb_dash = 2; req_dash = dotted; break; case wxPENSTYLE_LONG_DASH: req_nb_dash = 2; req_dash = wxCoord_dashed; break; case wxPENSTYLE_SHORT_DASH: req_nb_dash = 2; req_dash = short_dashed; break; case wxPENSTYLE_DOT_DASH: req_nb_dash = 4; req_dash = dotted_dashed; break; case wxPENSTYLE_TRANSPARENT: case wxPENSTYLE_STIPPLE_MASK_OPAQUE: case wxPENSTYLE_STIPPLE: case wxPENSTYLE_SOLID: default: lineStyle = GDK_LINE_SOLID; req_dash = NULL; req_nb_dash = 0; break; } if (req_dash && req_nb_dash) { wxGTKDash *real_req_dash = new wxGTKDash[req_nb_dash]; if (real_req_dash) { for (int i = 0; i < req_nb_dash; i++) real_req_dash[i] = req_dash[i] * width; gdk_gc_set_dashes( m_penGC, 0, real_req_dash, req_nb_dash ); delete[] real_req_dash; } else { // No Memory. We use non-scaled dash pattern... gdk_gc_set_dashes( m_penGC, 0, (wxGTKDash*)req_dash, req_nb_dash ); } } GdkCapStyle capStyle = GDK_CAP_ROUND; switch (m_pen.GetCap()) { case wxCAP_PROJECTING: { capStyle = GDK_CAP_PROJECTING; break; } case wxCAP_BUTT: { capStyle = GDK_CAP_BUTT; break; } case wxCAP_ROUND: default: if (width <= 1) { width = 0; capStyle = GDK_CAP_NOT_LAST; } break; } GdkJoinStyle joinStyle = GDK_JOIN_ROUND; switch (m_pen.GetJoin()) { case wxJOIN_BEVEL: { joinStyle = GDK_JOIN_BEVEL; break; } case wxJOIN_MITER: { joinStyle = GDK_JOIN_MITER; break; } case wxJOIN_ROUND: default: { joinStyle = GDK_JOIN_ROUND; break; } } gdk_gc_set_line_attributes( m_penGC, width, lineStyle, capStyle, joinStyle ); m_pen.GetColour().CalcPixel( m_cmap ); gdk_gc_set_foreground( m_penGC, m_pen.GetColour().GetColor() ); } void wxWindowDCImpl::SetBrush( const wxBrush &brush ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (m_brush == brush) return; m_brush = brush; if (!m_brush.IsOk()) return; if (!m_gdkwindow) return; m_brush.GetColour().CalcPixel( m_cmap ); gdk_gc_set_foreground( m_brushGC, m_brush.GetColour().GetColor() ); gdk_gc_set_fill( m_brushGC, GDK_SOLID ); if ((m_brush.GetStyle() == wxBRUSHSTYLE_STIPPLE) && (m_brush.GetStipple()->IsOk())) { if (m_brush.GetStipple()->GetDepth() != 1) { gdk_gc_set_fill( m_brushGC, GDK_TILED ); gdk_gc_set_tile( m_brushGC, m_brush.GetStipple()->GetPixmap() ); } else { gdk_gc_set_fill( m_brushGC, GDK_STIPPLED ); gdk_gc_set_stipple( m_brushGC, m_brush.GetStipple()->GetPixmap() ); } } if ((m_brush.GetStyle() == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE) && (m_brush.GetStipple()->GetMask())) { gdk_gc_set_fill( m_textGC, GDK_OPAQUE_STIPPLED); gdk_gc_set_stipple( m_textGC, m_brush.GetStipple()->GetMask()->GetBitmap() ); } if (m_brush.IsHatch()) { gdk_gc_set_fill( m_brushGC, GDK_STIPPLED ); gdk_gc_set_stipple(m_brushGC, GetHatch(m_brush.GetStyle())); } } void wxWindowDCImpl::SetBackground( const wxBrush &brush ) { /* CMB 21/7/98: Added SetBackground. Sets background brush * for Clear() and bg colour for shapes filled with cross-hatch brush */ wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (m_backgroundBrush == brush) return; m_backgroundBrush = brush; if (!m_backgroundBrush.IsOk()) return; if (!m_gdkwindow) return; wxColor color = m_backgroundBrush.GetColour(); color.CalcPixel(m_cmap); const GdkColor* gdkColor = color.GetColor(); gdk_gc_set_background(m_brushGC, gdkColor); gdk_gc_set_background(m_penGC, gdkColor); gdk_gc_set_background(m_bgGC, gdkColor); gdk_gc_set_foreground(m_bgGC, gdkColor); gdk_gc_set_fill( m_bgGC, GDK_SOLID ); if (m_backgroundBrush.GetStyle() == wxBRUSHSTYLE_STIPPLE) { const wxBitmap* stipple = m_backgroundBrush.GetStipple(); if (stipple->IsOk()) { if (stipple->GetDepth() != 1) { gdk_gc_set_fill(m_bgGC, GDK_TILED); gdk_gc_set_tile(m_bgGC, stipple->GetPixmap()); } else { gdk_gc_set_fill(m_bgGC, GDK_STIPPLED); gdk_gc_set_stipple(m_bgGC, stipple->GetPixmap()); } } } else if (m_backgroundBrush.IsHatch()) { gdk_gc_set_fill( m_bgGC, GDK_STIPPLED ); gdk_gc_set_stipple(m_bgGC, GetHatch(m_backgroundBrush.GetStyle())); } } void wxWindowDCImpl::SetLogicalFunction( wxRasterOperationMode function ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (m_logicalFunction == function) return; // VZ: shouldn't this be a CHECK? if (!m_gdkwindow) return; GdkFunction mode; switch (function) { case wxXOR: mode = GDK_XOR; break; case wxINVERT: mode = GDK_INVERT; break; case wxOR_REVERSE: mode = GDK_OR_REVERSE; break; case wxAND_REVERSE: mode = GDK_AND_REVERSE; break; case wxCLEAR: mode = GDK_CLEAR; break; case wxSET: mode = GDK_SET; break; case wxOR_INVERT: mode = GDK_OR_INVERT; break; case wxAND: mode = GDK_AND; break; case wxOR: mode = GDK_OR; break; case wxEQUIV: mode = GDK_EQUIV; break; case wxNAND: mode = GDK_NAND; break; case wxAND_INVERT: mode = GDK_AND_INVERT; break; case wxCOPY: mode = GDK_COPY; break; case wxNO_OP: mode = GDK_NOOP; break; case wxSRC_INVERT: mode = GDK_COPY_INVERT; break; case wxNOR: mode = GDK_NOR; break; default: wxFAIL_MSG("unknown mode"); return; } m_logicalFunction = function; gdk_gc_set_function( m_penGC, mode ); gdk_gc_set_function( m_brushGC, mode ); // to stay compatible with wxMSW, we don't apply ROPs to the text // operations (i.e. DrawText/DrawRotatedText). // True, but mono-bitmaps use the m_textGC and they use ROPs as well. gdk_gc_set_function( m_textGC, mode ); } void wxWindowDCImpl::SetTextForeground( const wxColour &col ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); // don't set m_textForegroundColour to an invalid colour as we'd crash // later then (we use m_textForegroundColour.GetColor() without checking // in a few places) if ( !col.IsOk() || (m_textForegroundColour == col) ) return; m_textForegroundColour = col; if ( m_gdkwindow ) { m_textForegroundColour.CalcPixel( m_cmap ); gdk_gc_set_foreground( m_textGC, m_textForegroundColour.GetColor() ); } } void wxWindowDCImpl::SetTextBackground( const wxColour &col ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); // same as above if ( !col.IsOk() || (m_textBackgroundColour == col) ) return; m_textBackgroundColour = col; if ( m_gdkwindow ) { m_textBackgroundColour.CalcPixel( m_cmap ); gdk_gc_set_background( m_textGC, m_textBackgroundColour.GetColor() ); } } void wxWindowDCImpl::SetBackgroundMode( int mode ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); m_backgroundMode = mode; } void wxWindowDCImpl::SetPalette( const wxPalette& WXUNUSED(palette) ) { wxFAIL_MSG( wxT("wxWindowDCImpl::SetPalette not implemented") ); } void wxWindowDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (!m_gdkwindow) return; wxRect rect; rect.x = XLOG2DEV(x); rect.y = YLOG2DEV(y); rect.width = XLOG2DEVREL(width); rect.height = YLOG2DEVREL(height); if (m_window && m_window->m_wxwindow && (m_window->GetLayoutDirection() == wxLayout_RightToLeft)) { rect.x -= rect.width; } DoSetDeviceClippingRegion(wxRegion(rect)); } void wxWindowDCImpl::DoSetDeviceClippingRegion( const wxRegion ®ion ) { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); if (region.Empty()) { DestroyClippingRegion(); return; } if (!m_gdkwindow) return; if (!m_currentClippingRegion.IsNull()) m_currentClippingRegion.Intersect( region ); else m_currentClippingRegion.Union( region ); #if USE_PAINT_REGION if (!m_paintClippingRegion.IsNull()) m_currentClippingRegion.Intersect( m_paintClippingRegion ); #endif wxCoord xx, yy, ww, hh; m_currentClippingRegion.GetBox( xx, yy, ww, hh ); wxGTKDCImpl::DoSetClippingRegion( xx, yy, ww, hh ); GdkRegion* gdkRegion = m_currentClippingRegion.GetRegion(); gdk_gc_set_clip_region(m_penGC, gdkRegion); gdk_gc_set_clip_region(m_brushGC, gdkRegion); gdk_gc_set_clip_region(m_textGC, gdkRegion); gdk_gc_set_clip_region(m_bgGC, gdkRegion); } void wxWindowDCImpl::DestroyClippingRegion() { wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxDCImpl::DestroyClippingRegion(); m_currentClippingRegion.Clear(); #if USE_PAINT_REGION if (!m_paintClippingRegion.IsEmpty()) m_currentClippingRegion.Union( m_paintClippingRegion ); #endif if (!m_gdkwindow) return; GdkRegion* gdkRegion = NULL; if (!m_currentClippingRegion.IsEmpty()) gdkRegion = m_currentClippingRegion.GetRegion(); gdk_gc_set_clip_region(m_penGC, gdkRegion); gdk_gc_set_clip_region(m_brushGC, gdkRegion); gdk_gc_set_clip_region(m_textGC, gdkRegion); gdk_gc_set_clip_region(m_bgGC, gdkRegion); } void wxWindowDCImpl::Destroy() { if (m_penGC) wxFreePoolGC( m_penGC ); m_penGC = NULL; if (m_brushGC) wxFreePoolGC( m_brushGC ); m_brushGC = NULL; if (m_textGC) wxFreePoolGC( m_textGC ); m_textGC = NULL; if (m_bgGC) wxFreePoolGC( m_bgGC ); m_bgGC = NULL; } void wxWindowDCImpl::SetDeviceOrigin( wxCoord x, wxCoord y ) { m_deviceOriginX = x; m_deviceOriginY = y; ComputeScaleAndOrigin(); } void wxWindowDCImpl::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) { m_signX = (xLeftRight ? 1 : -1); m_signY = (yBottomUp ? -1 : 1); if (m_window && m_window->m_wxwindow && (m_window->GetLayoutDirection() == wxLayout_RightToLeft)) m_signX = -m_signX; ComputeScaleAndOrigin(); } void wxWindowDCImpl::ComputeScaleAndOrigin() { const wxRealPoint origScale(m_scaleX, m_scaleY); wxDCImpl::ComputeScaleAndOrigin(); // if scale has changed call SetPen to recalulate the line width if ( wxRealPoint(m_scaleX, m_scaleY) != origScale && m_pen.IsOk() ) { // this is a bit artificial, but we need to force wxDC to think the pen // has changed wxPen pen = m_pen; m_pen = wxNullPen; SetPen( pen ); } } // Resolution in pixels per logical inch wxSize wxWindowDCImpl::GetPPI() const { return wxSize( (int) (m_mm_to_pix_x * 25.4 + 0.5), (int) (m_mm_to_pix_y * 25.4 + 0.5)); } int wxWindowDCImpl::GetDepth() const { return gdk_drawable_get_depth(m_gdkwindow); } //----------------------------------------------------------------------------- // wxClientDCImpl //----------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxClientDCImpl, wxWindowDCImpl) wxClientDCImpl::wxClientDCImpl( wxDC *owner ) : wxWindowDCImpl( owner ) { } wxClientDCImpl::wxClientDCImpl( wxDC *owner, wxWindow *win ) : wxWindowDCImpl( owner, win ) { wxCHECK_RET( win, wxT("NULL window in wxClientDCImpl::wxClientDC") ); #ifdef __WXUNIVERSAL__ wxPoint ptOrigin = win->GetClientAreaOrigin(); SetDeviceOrigin(ptOrigin.x, ptOrigin.y); wxSize size = win->GetClientSize(); DoSetClippingRegion(0, 0, size.x, size.y); #endif // __WXUNIVERSAL__ } void wxClientDCImpl::DoGetSize(int *width, int *height) const { wxCHECK_RET( m_window, wxT("GetSize() doesn't work without window") ); m_window->GetClientSize( width, height ); } //----------------------------------------------------------------------------- // wxPaintDCImpl //----------------------------------------------------------------------------- IMPLEMENT_ABSTRACT_CLASS(wxPaintDCImpl, wxClientDCImpl) // Limit the paint region to the window size. Sometimes // the paint region is too big, and this risks X11 errors static void wxLimitRegionToSize(wxRegion& region, const wxSize& sz) { wxRect originalRect = region.GetBox(); wxRect rect(originalRect); if (rect.width + rect.x > sz.x) rect.width = sz.x - rect.x; if (rect.height + rect.y > sz.y) rect.height = sz.y - rect.y; if (rect != originalRect) { region = wxRegion(rect); wxLogTrace(wxT("painting"), wxT("Limiting region from %d, %d, %d, %d to %d, %d, %d, %d\n"), originalRect.x, originalRect.y, originalRect.width, originalRect.height, rect.x, rect.y, rect.width, rect.height); } } wxPaintDCImpl::wxPaintDCImpl( wxDC *owner ) : wxClientDCImpl( owner ) { } wxPaintDCImpl::wxPaintDCImpl( wxDC *owner, wxWindow *win ) : wxClientDCImpl( owner, win ) { #if USE_PAINT_REGION if (!win->m_clipPaintRegion) return; wxSize sz = win->GetSize(); m_paintClippingRegion = win->m_nativeUpdateRegion; wxLimitRegionToSize(m_paintClippingRegion, sz); GdkRegion *region = m_paintClippingRegion.GetRegion(); if ( region ) { m_currentClippingRegion.Union( m_paintClippingRegion ); wxLimitRegionToSize(m_currentClippingRegion, sz); if (sz.x <= 0 || sz.y <= 0) return ; gdk_gc_set_clip_region( m_penGC, region ); gdk_gc_set_clip_region( m_brushGC, region ); gdk_gc_set_clip_region( m_textGC, region ); gdk_gc_set_clip_region( m_bgGC, region ); } #endif } // ---------------------------------------------------------------------------- // wxDCModule // ---------------------------------------------------------------------------- class wxDCModule : public wxModule { public: bool OnInit(); void OnExit(); private: DECLARE_DYNAMIC_CLASS(wxDCModule) }; IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule) bool wxDCModule::OnInit() { wxInitGCPool(); return true; } void wxDCModule::OnExit() { wxCleanUpGCPool(); for (int i = wxBRUSHSTYLE_LAST_HATCH - wxBRUSHSTYLE_FIRST_HATCH; i--; ) { if (hatches[i]) g_object_unref(hatches[i]); } }