// 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.
+ // in wxGetPoolGC.
wxFAIL_MSG( wxT("Cannot allocate GC pool") );
return;
}
// 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));
+ (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));
+ memset(&wxGCPool[wxGCPoolSize], 0,
+ GC_POOL_ALLOC_SIZE*sizeof(wxGC));
// Initialize entry we will return.
wxGCPool[wxGCPoolSize].m_gc = gdk_gc_new( window );
if (m_pen.GetStyle() != wxTRANSPARENT)
{
+/*
for (i = 0 ; i < n ; i++)
{
gdk_draw_line( m_window, m_penGC,
gdkpoints[(i+1)%n].x,
gdkpoints[(i+1)%n].y);
}
+*/
+ gdk_draw_polygon( m_window, m_penGC, FALSE, gdkpoints, n );
+
}
}
wxBitmap use_bitmap = bitmap;
if ((w != ww) || (h != hh))
use_bitmap = use_bitmap.Rescale( 0, 0, ww, hh, ww, hh );
+
+#if !GTK_CHECK_VERSION(2,2,0)
+ // NB: We can't render pixbufs with GTK+ < 2.2, we need to use pixmaps code.
+ // Pixbufs-based bitmaps with alpha channel don't have a mask, so we
+ // have to call GetPixmap() here -- it converts the pixbuf into pixmap
+ // and also creates the mask as a side-effect:
+ use_bitmap.GetPixmap();
+#endif
// apply mask if any
GdkBitmap *mask = (GdkBitmap *) NULL;
}
else
{
- gdk_draw_pixmap( m_window, m_penGC, use_bitmap.GetPixmap(), 0, 0, xx, yy, -1, -1 );
+#if GTK_CHECK_VERSION(2,2,0)
+ if (use_bitmap.HasPixbuf())
+ {
+ gdk_draw_pixbuf(m_window, m_penGC,
+ use_bitmap.GetPixbuf(),
+ 0, 0, xx, yy, -1, -1,
+ GDK_RGB_DITHER_NORMAL, xx, yy);
+ }
+ else
+#endif
+ {
+ gdk_draw_pixmap(m_window, m_penGC,
+ use_bitmap.GetPixmap(),
+ 0, 0, xx, yy, -1, -1);
+ }
}
// remove mask again if any
wxCoord bm_width = memDC->m_selected.GetWidth();
wxCoord bm_height = memDC->m_selected.GetHeight();
- // get clip coords
- wxRegion tmp( xx,yy,ww,hh );
- tmp.Intersect( m_currentClippingRegion );
- wxCoord cx,cy,cw,ch;
- tmp.GetBox(cx,cy,cw,ch);
+ // Get clip coords for the bitmap. If we don't
+ // use wxBitmap::Rescale(), which can clip the
+ // bitmap, these are the same as the original
+ // coordinates
+ wxCoord cx = xx;
+ wxCoord cy = yy;
+ wxCoord cw = ww;
+ wxCoord ch = hh;
// interpret userscale of src too
double xsc,ysc;
wxCoord bm_ww = XLOG2DEVREL( bm_width );
wxCoord bm_hh = YLOG2DEVREL( bm_height );
- // scale bitmap if required
+ // Scale bitmap if required
wxBitmap use_bitmap;
-
- if ((bm_width != bm_ww) || (bm_height != bm_hh))
+ if ((memDC->m_selected.GetWidth()!= bm_ww) || ( memDC->m_selected.GetHeight()!= bm_hh))
{
- use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
+ // This indicates that the blitting code below will get
+ // a clipped bitmap and therefore needs to move the origin
+ // accordingly
+ wxRegion tmp( xx,yy,ww,hh );
+ tmp.Intersect( m_currentClippingRegion );
+ tmp.GetBox(cx,cy,cw,ch);
+
+ // Scale and clipped bitmap
+ use_bitmap = memDC->m_selected.Rescale(cx-xx,cy-yy,cw,ch,bm_ww,bm_hh);
}
else
{
- // FIXME: use cx,cy,cw,ch here, too?
+ // Don't scale bitmap
use_bitmap = memDC->m_selected;
}
wxCHECK_RET( m_layout, wxT("no Pango layout") );
wxCHECK_RET( m_fontdesc, wxT("no Pango font description") );
+ bool underlined = m_font.Ok() && m_font.GetUnderlined();
+
#if wxUSE_UNICODE
const wxCharBuffer data = wxConvUTF8.cWC2MB( text );
#else
const wxWCharBuffer wdata = wxConvLocal.cMB2WC( text );
+ if ( !wdata )
+ return;
const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
#endif
- pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+ size_t datalen = strlen((const char*)data);
+ pango_layout_set_text( m_layout, (const char*) 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);
+ pango_layout_set_attributes(m_layout, attrs);
+ pango_attr_list_unref(attrs);
+ }
int w,h;
-
- if (abs(m_scaleY - 1.0) < 0.00001)
+
+ if (fabs(m_scaleY - 1.0) > 0.00001)
{
// If there is a user or actually any scale applied to
// the device context, scale the font.
// Draw layout.
gdk_draw_layout( m_window, m_textGC, x, y, m_layout );
}
+
+ if (underlined)
+ {
+ // undo underline attributes setting:
+ pango_layout_set_attributes(m_layout, NULL);
+ }
wxCoord width = w;
wxCoord height = h;
CalcBoundingBox (x, y);
}
+
+// TODO: There is an example of rotating text with GTK2 that would probably be
+// a better approach here:
+// http://www.daa.com.au/pipermail/pygtk/2003-April/005052.html
+
void wxWindowDC::DoDrawRotatedText( const wxString &text, wxCoord x, wxCoord y, double angle )
{
if (angle == 0.0)
if (!m_window) return;
-#ifdef __WXGTK20__
+ wxCoord w;
+ wxCoord h;
+
+#ifdef __WXGTK20__
// implement later without GdkFont for GTK 2.0
- return;
+ GetTextExtent(text, &w, &h, NULL,NULL, &m_font);
+
#else
GdkFont *font = m_font.GetInternalFont( m_scaleY );
wxCHECK_RET( font, wxT("invalid font") );
// the size of the text
- wxCoord w = gdk_string_width( font, text.mbc_str() );
- wxCoord h = font->ascent + font->descent;
-
+ w = gdk_string_width( font, text.mbc_str() );
+ h = font->ascent + font->descent;
+#endif
// draw the string normally
wxBitmap src(w, h);
wxMemoryDC dc;
dc.SelectObject(src);
dc.SetFont(GetFont());
- dc.SetBackground(*wxWHITE_BRUSH);
+ dc.SetBackground(*wxBLACK_BRUSH);
dc.SetBrush(*wxBLACK_BRUSH);
dc.Clear();
+ dc.SetTextForeground( *wxWHITE );
dc.DrawText(text, 0, 0);
dc.SelectObject(wxNullBitmap);
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);
- // prepare to blit-with-rotate the bitmap to the DC
- wxImage image = src.ConvertToImage();
- GdkColor *colText = m_textForegroundColour.GetColor(),
- *colBack = m_textBackgroundColour.GetColor();
-
- bool textColSet = TRUE;
+ wxImage image = src.ConvertToImage();
- unsigned char *data = image.GetData();
+ 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;
+ 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 );
- // paint pixel by pixel
- for ( wxCoord srcX = 0; srcX < w; srcX++ )
- {
- for ( wxCoord srcY = 0; srcY < h; srcY++ )
- {
- // transform source coords to dest coords
- double r = sqrt((double)srcX*srcX + srcY*srcY);
- double angleOrig = atan2((double)srcY, (double)srcX) - rad;
- wxCoord dstX = (wxCoord)(r*cos(angleOrig) + 0.5),
- dstY = (wxCoord)(r*sin(angleOrig) + 0.5);
-
- // black pixel?
- bool textPixel = data[(srcY*w + srcX)*3] == 0;
- if ( textPixel || (m_backgroundMode == wxSOLID) )
- {
- // change colour if needed
- if ( textPixel != textColSet )
- {
- gdk_gc_set_foreground( m_textGC, textPixel ? colText
- : colBack );
-
- textColSet = textPixel;
- }
-
- // don't use DrawPoint() because it uses the current pen
- // colour, and we don't need it here
- gdk_draw_point( m_window, m_textGC,
- XLOG2DEV(x) + dstX, YLOG2DEV(y) + dstY );
- }
- }
- }
// it would be better to draw with non underlined font and draw the line
// manually here (it would be more straight...)
}
#endif // 0
- // restore the font colour
- gdk_gc_set_foreground( m_textGC, colText );
-
// update the bounding box
CalcBoundingBox(x + minX, y + minY);
CalcBoundingBox(x + maxX, y + maxY);
-#endif
}
void wxWindowDC::DoGetTextExtent(const wxString &string,
wxCoord *descent, wxCoord *externalLeading,
wxFont *theFont) const
{
+ if ( width )
+ *width = 0;
+ if ( height )
+ *height = 0;
+ if ( descent )
+ *descent = 0;
+ if ( externalLeading )
+ *externalLeading = 0;
+
if (string.IsEmpty())
{
- if (width) (*width) = 0;
- if (height) (*height) = 0;
return;
}
// Set layout's text
#if wxUSE_UNICODE
const wxCharBuffer data = wxConvUTF8.cWC2MB( string );
- pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+ const char *dataUTF8 = (const char *)data;
#else
const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string );
+ if ( !wdata )
+ {
+ if (width) (*width) = 0;
+ if (height) (*height) = 0;
+ return;
+ }
const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata );
- pango_layout_set_text( m_layout, (const char*) data, strlen( (const char*) data ));
+ const char *dataUTF8 = (const char *)data;
#endif
+
+ if ( !dataUTF8 )
+ {
+ // hardly ideal, but what else can we do if conversion failed?
+ return;
+ }
+
+ pango_layout_set_text( m_layout, dataUTF8, strlen(dataUTF8) );
int w,h;
pango_layout_get_pixel_size( m_layout, &w, &h );
- if (width) (*width) = (wxCoord) w;
- if (height) (*height) = (wxCoord) h;
+ if (width)
+ *width = (wxCoord) w;
+ if (height)
+ *height = (wxCoord) h;
if (descent)
{
- // Do something about metrics here. TODO.
- (*descent) = 0;
+ 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 (externalLeading) (*externalLeading) = 0; // ??
// Reset old font description
if (theFont)
pango_layout_set_font_description( m_layout, m_fontdesc );
-#else
+#else // GTK+ 1.x
wxFont fontToUse = m_font;
- if (theFont) fontToUse = *theFont;
+ if (theFont)
+ fontToUse = *theFont;
GdkFont *font = fontToUse.GetInternalFont( m_scaleY );
- if (width) (*width) = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
- if (height) (*height) = wxCoord((font->ascent + font->descent) / m_scaleY);
- if (descent) (*descent) = wxCoord(font->descent / m_scaleY);
- if (externalLeading) (*externalLeading) = 0; // ??
-#endif
+ if ( !font )
+ return;
+
+ if (width)
+ *width = wxCoord(gdk_string_width( font, string.mbc_str() ) / m_scaleX);
+ if (height)
+ *height = wxCoord((font->ascent + font->descent) / m_scaleY);
+ if (descent)
+ *descent = wxCoord(font->descent / m_scaleY);
+#endif // GTK+ 2/1
}
wxCoord wxWindowDC::GetCharWidth() const
IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC)
+// 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);
+ }
+}
+
wxPaintDC::wxPaintDC( wxWindow *win )
: wxClientDC( win )
{
if (!win->m_clipPaintRegion)
return;
+ wxSize sz = win->GetSize();
m_paintClippingRegion = win->GetUpdateRegion();
+ wxLimitRegionToSize(m_paintClippingRegion, sz);
+
GdkRegion *region = m_paintClippingRegion.GetRegion();
if ( region )
{
- m_paintClippingRegion = win->GetUpdateRegion();
- GdkRegion *region = m_paintClippingRegion.GetRegion();
- if ( region )
- {
- m_currentClippingRegion.Union( m_paintClippingRegion );
+ m_currentClippingRegion.Union( m_paintClippingRegion );
+ wxLimitRegionToSize(m_currentClippingRegion, sz);
- 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 );
- }
+ 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 // USE_PAINT_REGION
}
projects / wxWidgets.git / blobdiff