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[x11] Draw to back pixmap instead of on exposes

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It's a little more efficient.
This commit is contained in:
Ray Strode 2009-10-03 00:26:14 -04:00
parent d83209248a
commit 997f9fe9fe
1 changed files with 34 additions and 47 deletions
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81
src/plugins/renderers/x11/plugin.c
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@ -67,6 +67,7 @@ struct _ply_renderer_head
ply_pixel_buffer_t *pixel_buffer;
ply_rectangle_t area;
GtkWidget *window;
GdkPixmap *pixmap;
cairo_surface_t *image;
};
@ -182,6 +183,10 @@ query_device (ply_renderer_backend_t *backend)
head->area.y = 0;
head->area.width = 800; /* FIXME hardcoded */
head->area.height = 600;
head->pixmap = gdk_pixmap_new (NULL,
head->area.width,
head->area.height,
24);
ply_list_append_data (backend->heads, head);
@ -192,6 +197,10 @@ query_device (ply_renderer_backend_t *backend)
head->area.y = 0;
head->area.width = 640; /* FIXME hardcoded */
head->area.height = 480;
head->pixmap = gdk_pixmap_new (NULL,
head->area.width,
head->area.height,
24);
ply_list_append_data (backend->heads, head);
}
@ -199,41 +208,6 @@ query_device (ply_renderer_backend_t *backend)
return true;
}
static void
screen_refresh (GtkWidget *widget,
cairo_surface_t *image,
int x,
int y,
int width,
int height)
{
cairo_t *cr;
cr = gdk_cairo_create (gtk_widget_get_window (widget));
cairo_rectangle (cr, x, y, width, height);
cairo_clip (cr);
cairo_set_source_surface (cr, image, 0, 0);
cairo_paint (cr);
cairo_destroy (cr);
return;
}
static gboolean
on_expose_event (GtkWidget *widget,
GdkEventExpose *event,
gpointer user_data)
{
cairo_surface_t *image = user_data;
screen_refresh (widget,
image,
event->area.x,
event->area.y,
event->area.width,
event->area.height);
return FALSE;
}
static gboolean
on_window_destroy (GtkWidget *widget,
GdkEvent *event,
@ -270,10 +244,8 @@ map_to_device (ply_renderer_backend_t *backend)
head->area.width * 4);
gtk_widget_set_app_paintable (head->window, TRUE);
gtk_widget_show_all (head->window);
gdk_window_set_back_pixmap (head->window->window, head->pixmap, FALSE);
g_signal_connect (head->window, "expose-event",
G_CALLBACK (on_expose_event),
head->image);
g_signal_connect (head->window, "key-press-event",
G_CALLBACK (on_key_event),
&backend->input_source);
@ -316,14 +288,20 @@ unmap_from_device (ply_renderer_backend_t *backend)
static void
flush_area_to_device (ply_renderer_backend_t *backend,
ply_renderer_head_t *head,
ply_rectangle_t *area_to_flush)
ply_rectangle_t *area_to_flush,
cairo_t *cr)
{
screen_refresh (head->window,
head->image,
area_to_flush->x,
area_to_flush->y,
area_to_flush->width,
area_to_flush->height);
cairo_save (cr);
cairo_rectangle (cr,
area_to_flush->x,
area_to_flush->y,
area_to_flush->width,
area_to_flush->height);
cairo_clip (cr);
cairo_set_source_surface (cr, head->image, 0, 0);
cairo_paint (cr);
cairo_restore (cr);
}
static void
@ -334,6 +312,7 @@ flush_head (ply_renderer_backend_t *backend,
ply_list_t *areas_to_flush;
ply_list_node_t *node;
ply_pixel_buffer_t *pixel_buffer;
cairo_t *cr;
assert (backend != NULL);
@ -341,6 +320,8 @@ flush_head (ply_renderer_backend_t *backend,
updated_region = ply_pixel_buffer_get_updated_areas (pixel_buffer);
areas_to_flush = ply_region_get_rectangle_list (updated_region);
cr = gdk_cairo_create (head->pixmap);
node = ply_list_get_first_node (areas_to_flush);
while (node != NULL)
{
@ -351,11 +332,17 @@ flush_head (ply_renderer_backend_t *backend,
next_node = ply_list_get_next_node (areas_to_flush, node);
flush_area_to_device (backend, head, area_to_flush);
flush_area_to_device (backend, head, area_to_flush, cr);
gdk_window_clear_area (head->window->window,
area_to_flush->x,
area_to_flush->y,
area_to_flush->width,
area_to_flush->height);
node = next_node;
}
ply_region_clear (updated_region);
cairo_destroy (cr);
}
static void