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GtkThemingEngine: Handle prelight transitions in render_layout()

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This commit is contained in:
Carlos Garnacho
2010-11-24 23:21:03 +01:00
parent e696c24f08
commit c90bee16ba
1 changed files with 29 additions and 0 deletions
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29
gtk/gtkthemingengine.c
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@ -2019,6 +2019,8 @@ gtk_theming_engine_render_layout (GtkThemingEngine *engine,
GdkRGBA *fg_color;
GtkStateFlags flags;
GdkScreen *screen;
gdouble progress;
gboolean running;
cairo_save (cr);
flags = gtk_theming_engine_get_state (engine);
@ -2030,6 +2032,33 @@ gtk_theming_engine_render_layout (GtkThemingEngine *engine,
screen = gtk_theming_engine_get_screen (engine);
matrix = pango_context_get_matrix (pango_layout_get_context (layout));
running = gtk_theming_engine_state_is_running (engine, GTK_STATE_PRELIGHT, &progress);
if (running)
{
GtkStateFlags other_flags;
GdkRGBA *other_fg;
if (flags & GTK_STATE_FLAG_PRELIGHT)
{
other_flags = flags & ~(GTK_STATE_FLAG_PRELIGHT);
progress = 1 - progress;
}
else
other_flags = flags | GTK_STATE_FLAG_PRELIGHT;
gtk_theming_engine_get (engine, other_flags,
"color", &other_fg,
NULL);
fg_color->red = CLAMP (fg_color->red + ((other_fg->red - fg_color->red) * progress), 0, 1);
fg_color->green = CLAMP (fg_color->green + ((other_fg->green - fg_color->green) * progress), 0, 1);
fg_color->blue = CLAMP (fg_color->blue + ((other_fg->blue - fg_color->blue) * progress), 0, 1);
fg_color->alpha = CLAMP (fg_color->alpha + ((other_fg->alpha - fg_color->alpha) * progress), 0, 1);
gdk_rgba_free (other_fg);
}
if (matrix)
{
cairo_matrix_t cairo_matrix;