void
Border::Render (cairo_t *cr, Region *region, bool path_only)
{
Brush *background = GetBackground ();
Brush *border_brush = GetBorderBrush ();
cairo_save (cr);
if (!path_only)
RenderLayoutClip (cr);
CornerRadius r = *GetCornerRadius ();
CornerRadius *round = &r;
Thickness thickness = *GetBorderThickness ();
Rect paint_border = extents;
Rect paint_background = paint_border.GrowBy (-thickness);
CornerRadius inner_adjusted = *round;
inner_adjusted.topLeft = MAX (round->topLeft - MAX (thickness.left, thickness.top) * .5, 0);
inner_adjusted.topRight = MAX (round->topRight - MAX (thickness.right, thickness.top) * .5, 0);
inner_adjusted.bottomRight = MAX (round->bottomRight - MAX (thickness.right, thickness.bottom) * .5, 0);
inner_adjusted.bottomLeft = MAX (round->bottomLeft - MAX (thickness.left, thickness.bottom) * .5, 0);
CornerRadius outer_adjusted = *round;
outer_adjusted.topLeft = outer_adjusted.topLeft ? MAX (round->topLeft + MAX (thickness.left, thickness.top) * .5, 0) : 0;
outer_adjusted.topRight = outer_adjusted.topRight ? MAX (round->topRight + MAX (thickness.right, thickness.top) * .5, 0) : 0;
outer_adjusted.bottomRight = outer_adjusted.bottomRight ? MAX (round->bottomRight + MAX (thickness.right, thickness.bottom) * .5, 0) : 0;
outer_adjusted.bottomLeft = outer_adjusted.bottomLeft ? MAX (round->bottomLeft + MAX (thickness.left, thickness.bottom) * .5, 0) : 0;
/*
* NOTE filling this way can leave alpha artifacts between the border fill and bg fill
* but some simple inspection of the ms results make me think that is what happens there
* too.
*/
cairo_new_path (cr);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
if (border_brush && !paint_border.IsEmpty ()) {
border_brush->SetupBrush (cr, paint_border);
paint_border.Draw (cr, &outer_adjusted);
paint_background.Draw (cr, &inner_adjusted);
if (!path_only)
border_brush->Fill (cr);
}
if (background && !paint_background.IsEmpty ()) {
background->SetupBrush (cr, paint_background);
paint_background.Draw (cr, &inner_adjusted);
if (!path_only)
background->Fill (cr);
}
cairo_restore (cr);
}
void
Grid::PostRender (Context *ctx, Region *region, bool skip_children)
{
// render our chidren if we need to
if (!skip_children) {
VisualTreeWalker walker = VisualTreeWalker (this, ZForward, false);
while (UIElement *child = walker.Step ())
child->DoRender (ctx, region);
}
if (GetShowGridLines () && ctx->IsMutable ()) {
double offset = 0;
double dash = 4;
ColumnDefinitionCollection *cols = GetColumnDefinitionsNoAutoCreate ();
RowDefinitionCollection *rows = GetRowDefinitionsNoAutoCreate ();
cairo_t *cr = ctx->Cairo ();
int col_count = cols ? cols->GetCount () : 0;
int row_count = rows ? rows->GetCount () : 0;
cairo_save (cr);
RenderLayoutClip (cr);
cairo_set_line_width(cr, 1.0);
// Initially render a blue color
cairo_set_dash (cr, &dash, 1, offset);
cairo_set_source_rgb (cr, 0.4, 0.4, 1.0);
cairo_new_path (cr);
// Draw gridlines between each pair of columns/rows
for (int count = 0; count < 2; count++) {
for (int i = 0, offset = 0; i < col_count - 1; i++) {
ColumnDefinition *def = cols->GetValueAt (i)->AsColumnDefinition ();
offset += def->GetActualWidth ();
cairo_move_to (cr, offset, 0);
cairo_line_to (cr, offset, GetActualHeight ());
}
for (int i = 0, offset = 0; i < row_count - 1; i++) {
RowDefinition *def = rows->GetValueAt (i)->AsRowDefinition ();
offset += def->GetActualHeight ();
cairo_move_to (cr, 0, offset);
cairo_line_to (cr, GetActualWidth (), offset);
}
cairo_stroke (cr);
// For the second pass render a yellow color in the gaps between the previous dashes
cairo_set_dash (cr, &dash, 1, dash);
cairo_set_source_rgb (cr, 1.0, 1.0, 0.3);
}
cairo_restore (cr);
}
// Chain up, but skip children since we've already rendered them here.
UIElement::PostRender (ctx, region, true);
}
void
Image::Render (cairo_t *cr, Region *region, bool path_only)
{
ImageSource *source = GetSource ();
cairo_pattern_t *pattern = NULL;
cairo_matrix_t matrix;
if (!source)
return;
source->Lock ();
cairo_save (cr);
Size specified (GetActualWidth (), GetActualHeight ());
Size stretched = ApplySizeConstraints (specified);
bool adjust = specified != GetRenderSize ();
if (GetStretch () != StretchUniformToFill)
specified = specified.Min (stretched);
Rect paint = Rect (0, 0, specified.width, specified.height);
if (!path_only) {
Rect image = Rect (0, 0, source->GetPixelWidth (), source->GetPixelHeight ());
if (GetStretch () == StretchNone)
paint = paint.Union (image);
if (image.width == 0.0 && image.height == 0.0)
goto cleanup;
pattern = cairo_pattern_create_for_surface (source->GetSurface (cr));
image_brush_compute_pattern_matrix (&matrix, paint.width, paint.height,
image.width, image.height,
GetStretch (),
AlignmentXCenter, AlignmentYCenter, NULL, NULL);
cairo_pattern_set_matrix (pattern, &matrix);
#if MAKE_EVERYTHING_SLOW_AND_BUGGY
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
#endif
if (cairo_pattern_status (pattern) == CAIRO_STATUS_SUCCESS) {
cairo_set_source (cr, pattern);
}
cairo_pattern_destroy (pattern);
}
if (adjust) {
// FIXME: Propagate error properly
MoonError error;
specified = MeasureOverrideWithError (specified, &error);
paint = Rect ((stretched.width - specified.width) * 0.5, (stretched.height - specified.height) * 0.5, specified.width, specified.height);
}
if (!path_only)
RenderLayoutClip (cr);
paint = paint.Intersection (Rect (0, 0, stretched.width, stretched.height));
paint.Draw (cr);
if (!path_only)
cairo_fill (cr);
cleanup:
cairo_restore (cr);
source->Unlock ();
}