Correctly align background brush when erasing owner drawn bitmaps in wxMSW.

[wxWidgets.git] / src / gtk / dcclient.cpp

diff --git a/src/gtk/dcclient.cpp b/src/gtk/dcclient.cpp
index 4b4b7fbf11cd1085c94b6928b96fd3f92501bc25..f6a7f3a94251d39c1ba7bbef9f8bc6bf989df793 100644 (file)
--- a/src/gtk/dcclient.cpp
+++ b/src/gtk/dcclient.cpp
@@ -71,27 +71,42 @@ static GdkPixmap* GetHatch(int style)
     const int i = style - wxBRUSHSTYLE_FIRST_HATCH;
     if (hatches[i] == NULL)
     {
+        // This macro creates a bitmap from an XBM file included above. Notice
+        // the need for the cast because gdk_bitmap_create_from_data() doesn't
+        // accept unsigned data but the arrays in XBM need to be unsigned to
+        // avoid warnings (and even errors in C+0x mode) from g++.
+#define CREATE_FROM_XBM_DATA(name) \
+        gdk_bitmap_create_from_data \
+        ( \
+            NULL, \
+            reinterpret_cast<gchar *>(name ## _bits), \
+            name ## _width, \
+            name ## _height \
+        )
+
         switch (style)
         {
         case wxBRUSHSTYLE_BDIAGONAL_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, bdiag_bits, bdiag_width, bdiag_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(bdiag);
             break;
         case wxBRUSHSTYLE_CROSSDIAG_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, cdiag_bits, cdiag_width, cdiag_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(cdiag);
             break;
         case wxBRUSHSTYLE_CROSS_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, cross_bits, cross_width, cross_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(cross);
             break;
         case wxBRUSHSTYLE_FDIAGONAL_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, fdiag_bits, fdiag_width, fdiag_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(fdiag);
             break;
         case wxBRUSHSTYLE_HORIZONTAL_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, horiz_bits, horiz_width, horiz_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(horiz);
             break;
         case wxBRUSHSTYLE_VERTICAL_HATCH:
-            hatches[i] = gdk_bitmap_create_from_data(NULL, verti_bits, verti_width, verti_height);
+            hatches[i] = CREATE_FROM_XBM_DATA(verti);
             break;
         }
+
+#undef CREATE_FROM_XBM_DATA
     }
     return hatches[i];
 }
@@ -269,6 +284,7 @@ wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
     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
@@ -278,6 +294,7 @@ wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
 
         wxCHECK_RET(widget, "DC needs a widget");
 
+        m_gdkwindow = widget->window;
         if (GTK_WIDGET_NO_WINDOW(widget))
             SetDeviceLocalOrigin(widget->allocation.x, widget->allocation.y);
     }
@@ -286,8 +303,6 @@ wxWindowDCImpl::wxWindowDCImpl( wxDC *owner, wxWindow *window ) :
     m_layout = pango_layout_new( m_context );
     m_fontdesc = pango_font_description_copy( widget->style->font_desc );
 
-    m_gdkwindow = widget->window;
-
     // Window not realized ?
     if (!m_gdkwindow)
     {
@@ -477,7 +492,7 @@ void wxWindowDCImpl::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );
 
-    if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+    if ( m_pen.IsNonTransparent() )
     {
         if (m_gdkwindow)
             gdk_draw_line( m_gdkwindow, m_penGC, XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2) );
@@ -491,7 +506,7 @@ void wxWindowDCImpl::DoCrossHair( wxCoord x, wxCoord y )
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );
 
-    if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+    if ( m_pen.IsNonTransparent() )
     {
         int w = 0;
         int h = 0;
@@ -589,7 +604,7 @@ void wxWindowDCImpl::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
 
     if (m_gdkwindow)
     {
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -601,11 +616,11 @@ void wxWindowDCImpl::DoDrawArc( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        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.GetStyle() != wxBRUSHSTYLE_TRANSPARENT) && (alpha2 - alpha1 != 360*64))
+            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 );
@@ -635,7 +650,7 @@ void wxWindowDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxC
         wxCoord start = wxCoord(sa * 64.0);
         wxCoord end = wxCoord((ea-sa) * 64.0);
 
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -647,7 +662,7 @@ void wxWindowDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord width, wxC
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        if ( m_pen.IsNonTransparent() )
             gdk_draw_arc( m_gdkwindow, m_penGC, FALSE, xx, yy, ww, hh, start, end );
     }
 
@@ -659,7 +674,7 @@ void wxWindowDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );
 
-    if ((m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT) && m_gdkwindow)
+    if ( m_pen.IsNonTransparent() && m_gdkwindow )
         gdk_draw_point( m_gdkwindow, m_penGC, XLOG2DEV(x), YLOG2DEV(y) );
 
     CalcBoundingBox (x, y);
@@ -669,9 +684,11 @@ void wxWindowDCImpl::DoDrawLines( int n, wxPoint points[], wxCoord xoffset, wxCo
 {
     wxCHECK_RET( IsOk(), wxT("invalid window dc") );
 
-    if (m_pen.GetStyle() == wxPENSTYLE_TRANSPARENT) return;
     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;
@@ -730,7 +747,7 @@ void wxWindowDCImpl::DoDrawPolygon( int n, wxPoint points[],
 
     if (m_gdkwindow)
     {
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -742,7 +759,7 @@ void wxWindowDCImpl::DoDrawPolygon( int n, wxPoint points[],
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        if ( m_pen.IsNonTransparent() )
         {
 /*
             for (i = 0 ; i < n ; i++)
@@ -781,7 +798,7 @@ void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoo
 
     if (m_gdkwindow)
     {
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -793,9 +810,8 @@ void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoo
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        if ( m_pen.IsNonTransparent() )
         {
-#if 1
             if ((m_pen.GetWidth() == 2) && (m_pen.GetCap() == wxCAP_ROUND) &&
                 (m_pen.GetJoin() == wxJOIN_ROUND) && (m_pen.GetStyle() == wxPENSTYLE_SOLID))
             {
@@ -818,7 +834,6 @@ void wxWindowDCImpl::DoDrawRectangle( wxCoord x, wxCoord y, wxCoord width, wxCoo
                 gdk_gc_set_line_attributes( m_penGC, 2, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND );
             }
             else
-#endif
             {
                 // Just use X11 for other cases
                 gdk_draw_rectangle( m_gdkwindow, m_penGC, FALSE, xx, yy, ww-1, hh-1 );
@@ -859,7 +874,7 @@ void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width
 
     // CMB: adjust size if outline is drawn otherwise the result is
     // 1 pixel too wide and high
-    if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+    if ( m_pen.IsNonTransparent() )
     {
         ww--;
         hh--;
@@ -874,7 +889,7 @@ void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width
         if (dd > hh) dd = hh;
         rr = dd / 2;
 
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -891,7 +906,7 @@ void wxWindowDCImpl::DoDrawRoundedRectangle( wxCoord x, wxCoord y, wxCoord width
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        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 );
@@ -924,7 +939,7 @@ void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord
 
     if (m_gdkwindow)
     {
-        if (m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
+        if ( m_brush.IsNonTransparent() )
         {
             GdkGC* gc;
             bool originChanged;
@@ -932,7 +947,7 @@ void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord
 
             // If the pen is transparent pen we increase the size
             // for better compatibility with other platforms.
-            if (m_pen.GetStyle() == wxPENSTYLE_TRANSPARENT)
+            if ( m_pen.IsNonTransparent() )
             {
                 ++ww;
                 ++hh;
@@ -944,7 +959,7 @@ void wxWindowDCImpl::DoDrawEllipse( wxCoord x, wxCoord y, wxCoord width, wxCoord
                 gdk_gc_set_ts_origin(gc, 0, 0);
         }
 
-        if (m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
+        if ( m_pen.IsNonTransparent() )
             gdk_draw_arc( m_gdkwindow, m_penGC, false, xx, yy, ww, hh, 0, 360*64 );
     }
 
@@ -1059,8 +1074,11 @@ void wxWindowDCImpl::DoDrawBitmap( const wxBitmap &bitmap,
     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 + w, y + h);
+    CalcBoundingBox(x + m_signX*w, y + m_signY*h);
 
     // device coords
     int xx = LogicalToDeviceX(x);