forked from AuroraMiddleware/gtk
7ede468849
It's not used by anyone, it's just there. gdk_draw_context_begin_frame_full() has been added so renderers can make use of it.
145 lines
4.8 KiB
C
145 lines
4.8 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* Copyright © 2018 Benjamin Otte
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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 "gdkconfig.h"
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#include "gdkcairocontext-broadway.h"
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#include "gdktextureprivate.h"
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#include "gdkprivate-broadway.h"
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G_DEFINE_TYPE (GdkBroadwayCairoContext, gdk_broadway_cairo_context, GDK_TYPE_CAIRO_CONTEXT)
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static void
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gdk_broadway_cairo_context_dispose (GObject *object)
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{
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G_OBJECT_CLASS (gdk_broadway_cairo_context_parent_class)->dispose (object);
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}
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static void
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gdk_broadway_cairo_context_begin_frame (GdkDrawContext *draw_context,
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gboolean request_hdr,
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cairo_region_t *region)
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{
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GdkBroadwayCairoContext *self = GDK_BROADWAY_CAIRO_CONTEXT (draw_context);
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GdkSurface *surface = gdk_draw_context_get_surface (GDK_DRAW_CONTEXT (self));
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cairo_t *cr;
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cairo_region_t *repaint_region;
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int width, height, scale;
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width = gdk_surface_get_width (surface);
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height = gdk_surface_get_height (surface);
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scale = gdk_surface_get_scale_factor (surface);
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self->paint_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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width * scale, height * scale);
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cairo_surface_set_device_scale (self->paint_surface, scale, scale);
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repaint_region = cairo_region_create_rectangle (&(cairo_rectangle_int_t) { 0, 0, width, height });
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cairo_region_union (region, repaint_region);
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cairo_region_destroy (repaint_region);
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/* clear the repaint area */
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cr = cairo_create (self->paint_surface);
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cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
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cairo_fill (cr);
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cairo_destroy (cr);
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}
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static void
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add_uint32 (GArray *nodes, guint32 v)
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{
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g_array_append_val (nodes, v);
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}
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static void
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add_float (GArray *nodes, float f)
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{
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gint32 i = (gint32) (f * 256.0f);
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guint u = (guint32) i;
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g_array_append_val (nodes, u);
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}
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static void
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gdk_broadway_cairo_context_end_frame (GdkDrawContext *draw_context,
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cairo_region_t *painted)
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{
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GdkBroadwayCairoContext *self = GDK_BROADWAY_CAIRO_CONTEXT (draw_context);
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GdkDisplay *display = gdk_draw_context_get_display (draw_context);
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GdkSurface *surface = gdk_draw_context_get_surface (draw_context);
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GdkTexture *texture;
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GPtrArray *node_textures;
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GArray *nodes;
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guint32 texture_id;
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nodes = g_array_new (FALSE, FALSE, sizeof(guint32));
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node_textures = g_ptr_array_new_with_free_func (g_object_unref);
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texture = gdk_texture_new_for_surface ((cairo_surface_t *)self->paint_surface);
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g_ptr_array_add (node_textures, g_object_ref (texture)); /* Transfers ownership to node_textures */
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texture_id = gdk_broadway_display_ensure_texture (display, texture);
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add_uint32 (nodes, BROADWAY_NODE_TEXTURE);
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add_float (nodes, 0);
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add_float (nodes, 0);
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add_float (nodes, cairo_image_surface_get_width (self->paint_surface));
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add_float (nodes, cairo_image_surface_get_height (self->paint_surface));
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add_uint32 (nodes, texture_id);
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gdk_broadway_surface_set_nodes (surface, nodes, node_textures);
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g_array_unref (nodes);
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g_ptr_array_unref (node_textures);
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cairo_surface_destroy (self->paint_surface);
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self->paint_surface = NULL;
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}
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static void
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gdk_broadway_cairo_context_surface_resized (GdkDrawContext *draw_context)
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{
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}
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static cairo_t *
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gdk_broadway_cairo_context_cairo_create (GdkCairoContext *context)
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{
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GdkBroadwayCairoContext *self = GDK_BROADWAY_CAIRO_CONTEXT (context);
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return cairo_create (self->paint_surface);
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}
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static void
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gdk_broadway_cairo_context_class_init (GdkBroadwayCairoContextClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GdkDrawContextClass *draw_context_class = GDK_DRAW_CONTEXT_CLASS (klass);
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GdkCairoContextClass *cairo_context_class = GDK_CAIRO_CONTEXT_CLASS (klass);
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gobject_class->dispose = gdk_broadway_cairo_context_dispose;
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draw_context_class->begin_frame = gdk_broadway_cairo_context_begin_frame;
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draw_context_class->end_frame = gdk_broadway_cairo_context_end_frame;
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draw_context_class->surface_resized = gdk_broadway_cairo_context_surface_resized;
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cairo_context_class->cairo_create = gdk_broadway_cairo_context_cairo_create;
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}
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static void
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gdk_broadway_cairo_context_init (GdkBroadwayCairoContext *self)
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{
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}
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