> Hello all,
> I try to create animation using GtkCellPixmap in GtkTreeView using next
> code:
>
> angle += PIXMAP_ROTATE_STEP;
> rotated_pixbuf = pixmap_rotate (original_pixbuf, angle);
>
> gtk_list_store_set (GTK_LIST_STORE (tree_model), &iter,
> FILE_LIST_COL_FILE_ICON, rotated_pixbuf,
> -1);
>
> this executes in g_timeout_add callback function.
> I find that function gtk_list_store_set is very slow.
> (cpu = 100% interval = 50 PIXMAP_ROTATE_STEP = 0.1f,
> cpu = 50% interval = 100 PIXMAP_ROTATE_STEP = 0.1f,
> cpu = 40% interval = 200 PIXMAP_ROTATE_STEP = 0.3f - this look bad)
> pixmap_rotate function use cpu for 0%.
> Maybe exists GtkCellRenderer that can halp me or another GtkTreeModel
> implementation?
>
> Thanks!
>
> and sorry for my bad english.
I solve my problem!
I write my own cell renderer, some interesting code:
static void
cell_renderer_animate_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags)
{
CellRendererAnimate *cell_animate = CELL_RENDERER_ANIMATE (cell);
gint width, height, x_offset, y_offset;
GdkDrawable *drawable = GDK_DRAWABLE (window);
GdkGC *gc = NULL;
int angel_step = 0;
gboolean is_timeout_active = FALSE;
GdkPixbuf *pixbuf = NULL;
RotateStepInfo *rotate_step_info;
if (cell_animate->pixbuf)
{
if (cell_animate->animate) {
angel_step = (int)g_object_get_data (G_OBJECT
(cell_animate->pixbuf), "angel");
is_timeout_active = (gboolean)g_object_get_data (G_OBJECT
(cell_animate->pixbuf),
"timeout_acitve");
pixbuf = cell_renderer_animate_rotate (cell_animate->pixbuf,
CELL_RENDERER_ANIMATE_ROTATE_STEP * angel_step);
rotate_step_info = g_malloc (sizeof (RotateStepInfo));
rotate_step_info->cell_area = *cell_area;
rotate_step_info->widget = widget;
rotate_step_info->pixbuf = cell_animate->pixbuf;
if (is_timeout_active == FALSE)
{
g_timeout_add_full (G_PRIORITY_DEFAULT_IDLE,
CELL_RENDERER_ANIMATE_ROTATE_INTERVAL,
cell_renderer_animate_rotate_step,
rotate_step_info,
g_free);
g_object_set_data (G_OBJECT (cell_animate->pixbuf),
"timeout_acitve",
(gpointer) TRUE);
}
}
else
pixbuf = g_object_ref (cell_animate->pixbuf);
cell_renderer_animate_get_size (cell, widget, cell_area,
&x_offset, &y_offset,
&width, &height);
width -= cell->xpad*2;
height -= cell->ypad*2;
gc = gdk_gc_new (drawable);
gdk_draw_pixbuf (drawable, gc,
pixbuf, 0, 0,
cell_area->x + x_offset + cell->xpad,
cell_area->y + y_offset + cell->ypad,
width, height,
GDK_RGB_DITHER_NONE,
0, 0);
g_object_unref (gc);
g_object_unref (pixbuf);
}
}
static gboolean
cell_renderer_animate_rotate_step (gpointer data)
{
RotateStepInfo *rotate_step_info = (RotateStepInfo*)data;
gint angel_step;
angel_step = (int)g_object_get_data (G_OBJECT
(rotate_step_info->pixbuf), "angel");
angel_step ++;
if (angel_step * CELL_RENDERER_ANIMATE_ROTATE_STEP >= M_PI*2)
angel_step = 1;
g_object_set_data (G_OBJECT (rotate_step_info->pixbuf), "angel",
(gpointer)angel_step);
gtk_widget_queue_draw_area (rotate_step_info->widget,
rotate_step_info->cell_area.x,
// TODO: Why it is need to add
rotate_step_info->cell_area.height????
rotate_step_info->cell_area.y + rotate_step_info->cell_area.height,
rotate_step_info->cell_area.width,
rotate_step_info->cell_area.height);
g_object_set_data (G_OBJECT (rotate_step_info->pixbuf),
"timeout_acitve",
(gpointer)FALSE);
return FALSE;
}
This code work fine cpu load == 0% with ROTATE_STEP = 0.15f and with
ROTATE_INTERVAL = 30!
--
Dubravin Andrey <[EMAIL PROTECTED]>
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