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libgimpwidgets: port GimpColorScale slider drawing to cairo

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This commit is contained in:
Michael Natterer 2010-09-10 20:57:06 +02:00
parent 8b4bcbb9e1
commit e617ecedd9
1 changed files with 34 additions and 26 deletions
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60
libgimpwidgets/gimpcolorscale.c
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@ -253,6 +253,7 @@ gimp_color_scale_expose (GtkWidget *widget,
GtkRange *range = GTK_RANGE (widget);
GtkStyle *style = gtk_widget_get_style (widget);
GdkWindow *window = gtk_widget_get_window (widget);
cairo_t *cr;
GtkAllocation allocation;
GdkRectangle range_rect;
GdkRectangle expose_area; /* Relative to widget->allocation */
@ -267,6 +268,11 @@ gimp_color_scale_expose (GtkWidget *widget,
if (! scale->buf || ! gtk_widget_is_drawable (widget))
return FALSE;
cr = gdk_cairo_create (gtk_widget_get_window (widget));
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
gtk_widget_style_get (widget,
"trough-border", &trough_border,
NULL);
@ -382,53 +388,55 @@ gimp_color_scale_expose (GtkWidget *widget,
if (gdk_rectangle_intersect (&event->area, &area, &expose_area))
{
GdkGC *gc;
gc = (gtk_widget_is_sensitive (widget) ?
style->black_gc :
style->dark_gc[GTK_STATE_INSENSITIVE]);
gdk_gc_set_clip_rectangle (gc, &expose_area);
if (gtk_widget_is_sensitive (widget))
gdk_cairo_set_source_color (cr, &style->black);
else
gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_INSENSITIVE]);
switch (gtk_orientable_get_orientation (GTK_ORIENTABLE (range)))
{
case GTK_ORIENTATION_HORIZONTAL:
for (w = area.width, x = area.x, y = area.y;
w > 0; w -= 2, x++, y++)
gdk_draw_line (window, gc, x, y, x + w - 1, y);
cairo_move_to (cr, area.x, area.y);
cairo_line_to (cr, area.x + area.width, area.y);
cairo_line_to (cr, area.x + area.width / 2 + 0.5, area.y + area.height / 2 - 1);
break;
case GTK_ORIENTATION_VERTICAL:
for (h = area.height, x = area.x, y = area.y;
h > 0; h -= 2, x++, y++)
gdk_draw_line (window, gc, x, y, x, y + h - 1);
cairo_move_to (cr, area.x, area.y);
cairo_line_to (cr, area.x, area.y + area.height);
cairo_line_to (cr, area.x + area.width / 2 - 1, area.y + area.height / 2 + 0.5);
break;
}
gdk_gc_set_clip_rectangle (gc, NULL);
cairo_close_path (cr);
cairo_fill (cr);
gc = (gtk_widget_is_sensitive (widget) ?
style->white_gc :
style->light_gc[GTK_STATE_INSENSITIVE]);
gdk_gc_set_clip_rectangle (gc, &expose_area);
if (gtk_widget_is_sensitive (widget))
gdk_cairo_set_source_color (cr, &style->white);
else
gdk_cairo_set_source_color (cr, &style->light[GTK_STATE_INSENSITIVE]);
switch (gtk_orientable_get_orientation (GTK_ORIENTABLE (range)))
{
case GTK_ORIENTATION_HORIZONTAL:
for (w = area.width, x = area.x, y = area.y + area.height - 1;
w > 0; w -= 2, x++, y--)
gdk_draw_line (window, gc, x, y, x + w - 1, y);
cairo_move_to (cr, area.x, area.y + area.height);
cairo_line_to (cr, area.x + area.width, area.y + area.height);
cairo_line_to (cr, area.x + area.width / 2 + 0.5, area.y + area.height / 2 + 1);
break;
case GTK_ORIENTATION_VERTICAL:
for (h = area.height, x = area.x + area.width - 1, y = area.y;
h > 0; h -= 2, x--, y++)
gdk_draw_line (window, gc, x, y, x, y + h - 1);
cairo_move_to (cr, area.x + area.width, area.y);
cairo_line_to (cr, area.x + area.width, area.y + area.height);
cairo_line_to (cr, area.x + area.width / 2 + 1, area.y + area.height / 2 + 1);
break;
}
gdk_gc_set_clip_rectangle (gc, NULL);
cairo_close_path (cr);
cairo_fill (cr);
}
cairo_destroy (cr);
return FALSE;
}