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API: Add gtk_cell_renderer_render_cairo()

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It's like gtk_cell_renderer_render(), just cooler.
This commit is contained in:
Benjamin Otte 2010-08-22 03:53:45 +02:00
parent e31e77eeb8
commit 42947e3cdc
2 changed files with 54 additions and 5 deletions
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53
gtk/gtkcellrenderer.c
View File

@ -639,19 +639,62 @@ gtk_cell_renderer_render (GtkCellRenderer *cell,
const GdkRectangle *expose_area,
GtkCellRendererState flags)
{
gboolean selected = FALSE;
GtkCellRendererPrivate *priv = cell->priv;
cairo_t *cr;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->render != NULL);
selected = (flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED;
cr = gdk_cairo_create (window);
gdk_cairo_rectangle (cr, expose_area);
cairo_clip (cr);
gtk_cell_renderer_render_cairo (cell,
cr,
widget,
background_area,
cell_area,
flags);
cairo_destroy (cr);
}
/**
* gtk_cell_renderer_render_cairo:
* @cell: a #GtkCellRenderer
* @cr: a cairo context to draw to
* @widget: the widget owning @window
* @background_area: entire cell area (including tree expanders and maybe
* padding on the sides)
* @cell_area: area normally rendered by a cell renderer
* @flags: flags that affect rendering
*
* Invokes the virtual render function of the #GtkCellRenderer. The three
* passed-in rectangles are areas in @cr. Most renderers will draw within
* @cell_area; the xalign, yalign, xpad, and ypad fields of the #GtkCellRenderer
* should be honored with respect to @cell_area. @background_area includes the
* blank space around the cell, and also the area containing the tree expander;
* so the @background_area rectangles for all cells tile to cover the entire
* @window.
**/
void
gtk_cell_renderer_render_cairo (GtkCellRenderer *cell,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags)
{
gboolean selected = FALSE;
GtkCellRendererPrivate *priv = cell->priv;
g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
g_return_if_fail (GTK_CELL_RENDERER_GET_CLASS (cell)->render != NULL);
g_return_if_fail (cr != NULL);
selected = (flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED;
cairo_save (cr);
if (priv->cell_background_set && !selected)
{
gdk_cairo_rectangle (cr, background_area);
@ -666,7 +709,7 @@ gtk_cell_renderer_render (GtkCellRenderer *cell,
cell_area,
flags);
cairo_destroy (cr);
cairo_restore (cr);
}
/**

6
gtk/gtkcellrenderer.h
View File

@ -126,6 +126,12 @@ void gtk_cell_renderer_render (GtkCellRenderer *cell,
const GdkRectangle *cell_area,
const GdkRectangle *expose_area,
GtkCellRendererState flags);
void gtk_cell_renderer_render_cairo (GtkCellRenderer *cell,
cairo_t *cr,
GtkWidget *widget,
const GdkRectangle *background_area,
const GdkRectangle *cell_area,
GtkCellRendererState flags);
gboolean gtk_cell_renderer_activate (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,