forked from AuroraMiddleware/gtk
a0e63b8a07
This is in preparation of making render nodes independent of the renderer, so that they can be rendered multiple times with different renderers.
319 lines
8.9 KiB
C
319 lines
8.9 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2016 Benjamin Otte <otte@gnome.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkdebugupdatesprivate.h"
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/* duration before we start fading in us */
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#define GDK_DRAW_REGION_MIN_DURATION 50 * 1000
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/* duration when fade is finished in us */
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#define GDK_DRAW_REGION_MAX_DURATION 200 * 1000
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typedef struct {
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gint64 timestamp;
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cairo_region_t *region;
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} GtkDebugUpdate;
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static gboolean _gtk_debug_updates_enabled = FALSE;
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static GQuark _gtk_debug_updates_quark = 0;
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static void
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gtk_debug_updates_init (void)
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{
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static gboolean inited = FALSE;
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if (G_LIKELY (inited))
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return;
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_gtk_debug_updates_quark = g_quark_from_static_string ("-gtk-debug-updates");
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inited = TRUE;
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}
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gboolean
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gtk_debug_updates_get_enabled (void)
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{
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return _gtk_debug_updates_enabled;
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}
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void
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gtk_debug_updates_set_enabled (gboolean enabled)
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{
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if (enabled)
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gtk_debug_updates_init ();
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_gtk_debug_updates_enabled = enabled;
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}
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gboolean
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gtk_debug_updates_get_enabled_for_display (GdkDisplay *display)
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{
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if (gtk_debug_updates_get_enabled ())
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return TRUE;
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if (_gtk_debug_updates_quark == 0)
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return FALSE;
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return g_object_get_qdata (G_OBJECT (display), _gtk_debug_updates_quark) != NULL;
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}
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void
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gtk_debug_updates_set_enabled_for_display (GdkDisplay *display,
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gboolean enabled)
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{
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if (enabled)
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{
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gtk_debug_updates_init ();
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g_object_set_qdata (G_OBJECT (display), _gtk_debug_updates_quark, GINT_TO_POINTER (TRUE));
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}
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else
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{
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if (_gtk_debug_updates_quark != 0)
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g_object_steal_qdata (G_OBJECT (display), _gtk_debug_updates_quark);
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}
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}
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static void
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gtk_debug_update_free (gpointer data)
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{
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GtkDebugUpdate *region = data;
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cairo_region_destroy (region->region);
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g_slice_free (GtkDebugUpdate, region);
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}
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static void
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gtk_debug_update_free_queue (gpointer data)
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{
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GQueue *queue = data;
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g_queue_free_full (queue, gtk_debug_update_free);
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}
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static void
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gtk_debug_updates_print (GQueue *queue,
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const cairo_region_t *region,
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const char *format,
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...) G_GNUC_PRINTF(3,4);
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static void
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gtk_debug_updates_print (GQueue *queue,
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const cairo_region_t *region,
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const char *format,
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...)
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{
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#if 0
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GString *string = g_string_new (NULL);
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va_list args;
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g_string_append_printf (string, "%3u: ", g_queue_get_length (queue));
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if (region)
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{
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cairo_rectangle_int_t extents;
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cairo_region_get_extents (region, &extents);
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g_string_append_printf (string, "{%u,%u,%u,%u}(%u) ",
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extents.x, extents.y,
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extents.width, extents.height,
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cairo_region_num_rectangles (region));
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}
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va_start (args, format);
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g_string_append_vprintf (string, format, args);
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va_end (args);
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g_print ("%s\n", string->str);
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g_string_free (string, TRUE);
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#endif
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}
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static gboolean
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gtk_window_manage_updates (GtkWidget *widget,
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GdkFrameClock *frame_clock,
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gpointer user_data)
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{
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GQueue *updates;
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GtkDebugUpdate *draw;
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cairo_region_t *region;
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gint64 timestamp;
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GList *l;
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updates = g_object_get_qdata (G_OBJECT (widget), _gtk_debug_updates_quark);
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if (updates == NULL)
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return FALSE;
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timestamp = gdk_frame_clock_get_frame_time (frame_clock);
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gtk_debug_updates_print (updates, NULL, "Managing updates");
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/* First queue an update for all regions.
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* While doing so, set the correct timestamp on all untimed regions */
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region = cairo_region_create ();
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for (l = g_queue_peek_head_link (updates); l != NULL; l = l->next)
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{
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draw = l->data;
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if (draw->timestamp == 0)
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{
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draw->timestamp = timestamp;
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gtk_debug_updates_print (updates, draw->region, "Setting timestamp to %lli\n", (long long) timestamp);
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}
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cairo_region_union (region, draw->region);
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}
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gtk_debug_updates_print (updates, region, "Queued update");
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gdk_window_invalidate_region (gtk_widget_get_window (widget), region, TRUE);
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cairo_region_destroy (region);
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/* Then remove all outdated regions */
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do {
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draw = g_queue_peek_tail (updates);
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if (draw == NULL)
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{
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gtk_debug_updates_print (updates, NULL, "Empty, no more updates");
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g_object_set_qdata (G_OBJECT (widget), _gtk_debug_updates_quark, NULL);
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return FALSE;
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}
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if (draw->timestamp + GDK_DRAW_REGION_MAX_DURATION >= timestamp)
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break;
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gtk_debug_updates_print (updates, draw->region, "Popped region");
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draw = g_queue_pop_tail (updates);
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gtk_debug_update_free (draw);
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} while (TRUE);
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return TRUE;
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}
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void
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gtk_debug_updates_add (GtkWidget *widget,
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const cairo_region_t *region)
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{
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GQueue *updates;
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GtkDebugUpdate *draw;
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if (!gtk_debug_updates_get_enabled_for_display (gtk_widget_get_display (widget)))
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return;
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updates = g_object_get_qdata (G_OBJECT (widget), _gtk_debug_updates_quark);
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if (updates == NULL)
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{
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updates = g_queue_new ();
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gtk_widget_add_tick_callback (widget,
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gtk_window_manage_updates,
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NULL,
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NULL);
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g_object_set_qdata_full (G_OBJECT (widget),
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_gtk_debug_updates_quark,
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updates,
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gtk_debug_update_free_queue);
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gtk_debug_updates_print (updates, NULL, "Newly created");
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}
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else
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{
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GtkDebugUpdate *first = g_queue_peek_head (updates);
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if (first->timestamp == 0)
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{
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cairo_region_union (first->region, region);
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gtk_debug_updates_print (updates, first->region, "Added to existing region");
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return;
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}
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}
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draw = g_slice_new0 (GtkDebugUpdate);
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draw->region = cairo_region_copy (region);
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g_queue_push_head (updates, draw);
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gtk_debug_updates_print (updates, draw->region, "Added new region");
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}
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static void
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gtk_debug_updates_queue_get_extents (GQueue *updates,
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GdkRectangle *extents)
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{
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GtkDebugUpdate *draw;
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GdkRectangle rect;
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GList *l;
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*extents = (GdkRectangle) { 0, 0, 0, 0 };
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for (l = g_queue_peek_head_link (updates); l != NULL; l = l->next)
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{
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draw = l->data;
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cairo_region_get_extents (draw->region, &rect);
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gdk_rectangle_union (extents, &rect, extents);
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}
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}
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GskRenderNode *
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gtk_debug_updates_get_render_node (GtkWidget *widget,
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GskRenderer *renderer)
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{
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GQueue *updates;
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GskRenderNode *node;
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GtkDebugUpdate *draw;
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GdkRectangle rect;
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gint64 timestamp;
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double progress;
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cairo_t *cr;
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GList *l;
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if (!gtk_debug_updates_get_enabled_for_display (gtk_widget_get_display (widget)))
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return NULL;
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updates = g_object_get_qdata (G_OBJECT (widget), _gtk_debug_updates_quark);
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if (updates == NULL)
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return NULL;
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timestamp = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
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gtk_debug_updates_print (updates, NULL, "Painting at %lli", (long long) timestamp);
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node = gsk_renderer_create_render_node (renderer);
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gsk_render_node_set_name (node, "Debug Updates");
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gtk_debug_updates_queue_get_extents (updates, &rect);
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gsk_render_node_set_bounds (node, &(graphene_rect_t) GRAPHENE_RECT_INIT(rect.x, rect.y, rect.width, rect.height));
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cr = gsk_render_node_get_draw_context (node, renderer);
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for (l = g_queue_peek_head_link (updates); l != NULL; l = l->next)
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{
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draw = l->data;
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if (timestamp - draw->timestamp < GDK_DRAW_REGION_MIN_DURATION)
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progress = 0.0;
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else if (timestamp - draw->timestamp < GDK_DRAW_REGION_MAX_DURATION)
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progress = (double) (timestamp - draw->timestamp - GDK_DRAW_REGION_MIN_DURATION)
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/ (GDK_DRAW_REGION_MAX_DURATION - GDK_DRAW_REGION_MIN_DURATION);
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else
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continue;
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cairo_set_source_rgba (cr, 1, 0, 0, 0.4 * (1 - progress));
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gtk_debug_updates_print (updates, draw->region, "Painting with progress %g", progress);
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gdk_cairo_region (cr, draw->region);
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cairo_fill (cr);
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}
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cairo_destroy (cr);
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return node;
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}
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