forked from AuroraMiddleware/gtk
40565fb030
We do no longer bind textures to a renderer, instead they are a way for applications to provide texture data. For now, that's it. We've reverted to uploading it from scratch every frame.
412 lines
11 KiB
C
412 lines
11 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 "gtksnapshot.h"
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#include "gtksnapshotprivate.h"
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#include "gtkcssrgbavalueprivate.h"
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#include "gtkcssshadowsvalueprivate.h"
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#include "gtkrenderbackgroundprivate.h"
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#include "gtkrenderborderprivate.h"
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#include "gtkrendericonprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gsk/gskrendernodeprivate.h"
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void
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gtk_snapshot_init (GtkSnapshot *state,
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GskRenderer *renderer)
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{
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state->node = NULL;
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state->root = NULL;
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state->renderer = renderer;
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graphene_matrix_init_identity (&state->transform);
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}
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GskRenderNode *
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gtk_snapshot_finish (GtkSnapshot *state)
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{
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if (state->node != NULL)
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{
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g_warning ("Too many gtk_snapshot_push() calls.");
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}
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return state->root;
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}
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void
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gtk_snapshot_push_node (GtkSnapshot *state,
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GskRenderNode *node)
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{
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gtk_snapshot_append_node (state, node);
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state->node = node;
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graphene_matrix_init_identity (&state->transform);
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}
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void
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gtk_snapshot_push (GtkSnapshot *state,
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const graphene_rect_t *bounds,
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const char *name,
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...)
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{
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GskRenderNode *node;
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node = gsk_renderer_create_render_node (state->renderer);
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gsk_render_node_set_bounds (node, bounds);
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if (name)
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{
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va_list args;
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char *str;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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gsk_render_node_set_name (node, str);
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g_free (str);
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}
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gtk_snapshot_push_node (state, node);
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gsk_render_node_unref (node);
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}
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void
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gtk_snapshot_pop (GtkSnapshot *state)
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{
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if (state->node == NULL)
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{
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g_warning ("Too many gtk_snapshot_pop() calls.");
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return;
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}
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gsk_render_node_get_transform (state->node, &state->transform);
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state->node = gsk_render_node_get_parent (state->node);
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}
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GskRenderer *
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gtk_snapshot_get_renderer (const GtkSnapshot *state)
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{
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return state->renderer;
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}
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#if 0
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GskRenderNode *
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gtk_snapshot_create_render_node (const GtkSnapshot *state,
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const char *name,
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...)
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{
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GskRenderNode *node;
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node = gsk_renderer_create_render_node (state->renderer);
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if (name)
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{
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va_list args;
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char *str;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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gsk_render_node_set_name (node, str);
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g_free (str);
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}
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return node;
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}
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#endif
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void
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gtk_snapshot_set_transform (GtkSnapshot *state,
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const graphene_matrix_t *transform)
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{
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graphene_matrix_init_from_matrix (&state->transform, transform);
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}
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void
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gtk_snapshot_transform (GtkSnapshot *state,
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const graphene_matrix_t *transform)
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{
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graphene_matrix_t result;
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graphene_matrix_multiply (&state->transform, transform, &result);
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graphene_matrix_init_from_matrix (&state->transform, &result);
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}
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void
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gtk_snapshot_translate_2d (GtkSnapshot *state,
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int x,
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int y)
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{
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graphene_matrix_t transform;
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graphene_point3d_t point;
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graphene_point3d_init (&point, x, y, 0);
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graphene_matrix_init_translate (&transform, &point);
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gtk_snapshot_transform (state, &transform);
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}
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void
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gtk_snapshot_append_node (GtkSnapshot *state,
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GskRenderNode *node)
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{
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g_return_if_fail (state != NULL);
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g_return_if_fail (GSK_IS_RENDER_NODE (node));
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gsk_render_node_set_transform (node, &state->transform);
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if (state->node)
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gsk_render_node_append_child (state->node, node);
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else if (state->root == NULL)
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state->root = gsk_render_node_ref (node);
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else
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{
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g_critical ("Tried appending a node to an already finished snapshot.");
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}
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}
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GskRenderNode *
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gtk_snapshot_append (GtkSnapshot *state,
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const graphene_rect_t *bounds,
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const char *name,
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...)
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{
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GskRenderNode *node;
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g_return_val_if_fail (state != NULL, NULL);
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g_return_val_if_fail (bounds != NULL, NULL);
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node = gsk_renderer_create_render_node (state->renderer);
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gsk_render_node_set_bounds (node, bounds);
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if (name)
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{
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va_list args;
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char *str;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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gsk_render_node_set_name (node, str);
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g_free (str);
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}
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gtk_snapshot_append_node (state, node);
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return node;
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}
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cairo_t *
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gtk_snapshot_append_cairo_node (GtkSnapshot *state,
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const graphene_rect_t *bounds,
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const char *name,
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...)
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{
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GskRenderNode *node;
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g_return_val_if_fail (state != NULL, NULL);
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g_return_val_if_fail (bounds != NULL, NULL);
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node = gsk_renderer_create_render_node (state->renderer);
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gsk_render_node_set_bounds (node, bounds);
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if (name)
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{
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va_list args;
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char *str;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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gsk_render_node_set_name (node, str);
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g_free (str);
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}
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gtk_snapshot_append_node (state, node);
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gsk_render_node_unref (node);
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return gsk_render_node_get_draw_context (node, state->renderer);
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}
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cairo_t *
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gtk_snapshot_push_cairo_node (GtkSnapshot *state,
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const graphene_rect_t *bounds,
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const char *name,
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...)
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{
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GskRenderNode *node;
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g_return_val_if_fail (state != NULL, NULL);
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g_return_val_if_fail (bounds != NULL, NULL);
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node = gsk_renderer_create_render_node (state->renderer);
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gsk_render_node_set_bounds (node, bounds);
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if (name)
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{
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va_list args;
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char *str;
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va_start (args, name);
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str = g_strdup_vprintf (name, args);
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va_end (args);
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gsk_render_node_set_name (node, str);
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g_free (str);
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}
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gtk_snapshot_push_node (state, node);
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gsk_render_node_unref (node);
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return gsk_render_node_get_draw_context (node, state->renderer);
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}
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gboolean
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gtk_snapshot_clips_rect (GtkSnapshot *snapshot,
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const graphene_rect_t *bounds)
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{
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return FALSE;
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}
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void
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gtk_snapshot_render_background (GtkSnapshot *state,
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GtkStyleContext *context,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (state != NULL);
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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gtk_snapshot_translate_2d (state, x, y);
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gtk_css_style_snapshot_background (gtk_style_context_lookup_style (context),
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state,
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width, height,
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gtk_style_context_get_junction_sides (context));
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gtk_snapshot_translate_2d (state, -x, -y);
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}
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void
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gtk_snapshot_render_frame (GtkSnapshot *state,
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GtkStyleContext *context,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (state != NULL);
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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gtk_snapshot_translate_2d (state, x, y);
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gtk_css_style_snapshot_border (gtk_style_context_lookup_style (context),
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state,
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width, height,
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gtk_style_context_get_junction_sides (context));
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gtk_snapshot_translate_2d (state, -x, -y);
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}
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void
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gtk_snapshot_render_focus (GtkSnapshot *state,
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GtkStyleContext *context,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height)
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{
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g_return_if_fail (state != NULL);
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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gtk_snapshot_translate_2d (state, x, y);
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gtk_css_style_snapshot_outline (gtk_style_context_lookup_style (context),
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state,
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width, height);
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gtk_snapshot_translate_2d (state, -x, -y);
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}
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void
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gtk_snapshot_render_layout (GtkSnapshot *state,
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GtkStyleContext *context,
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gdouble x,
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gdouble y,
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PangoLayout *layout)
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{
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const GdkRGBA *fg_color;
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graphene_rect_t bounds;
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GtkBorder shadow_extents;
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PangoRectangle ink_rect;
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GtkCssValue *shadow;
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cairo_t *cr;
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g_return_if_fail (state != NULL);
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g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
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g_return_if_fail (PANGO_IS_LAYOUT (layout));
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fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
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shadow = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW);
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pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
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_gtk_css_shadows_value_get_extents (shadow, &shadow_extents);
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graphene_rect_init (&bounds,
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ink_rect.x - shadow_extents.left,
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ink_rect.y - shadow_extents.top,
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ink_rect.width + shadow_extents.left + shadow_extents.right,
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ink_rect.height + shadow_extents.top + shadow_extents.bottom);
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gtk_snapshot_translate_2d (state, x, y);
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cr = gtk_snapshot_append_cairo_node (state, &bounds, "Text<%dchars>", pango_layout_get_character_count (layout));
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_gtk_css_shadows_value_paint_layout (shadow, cr, layout);
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gdk_cairo_set_source_rgba (cr, fg_color);
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pango_cairo_show_layout (cr, layout);
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cairo_destroy (cr);
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gtk_snapshot_translate_2d (state, -x, -y);
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}
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void
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gtk_snapshot_render_icon (GtkSnapshot *snapshot,
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GtkStyleContext *context,
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GdkPixbuf *pixbuf,
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gdouble x,
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gdouble y)
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{
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GskTexture *texture;
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texture = gsk_texture_new_for_pixbuf (pixbuf);
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gtk_snapshot_translate_2d (snapshot, x, y);
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gtk_css_style_snapshot_icon (gtk_style_context_lookup_style (context),
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snapshot,
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texture);
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gtk_snapshot_translate_2d (snapshot, -x, -y);
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gsk_texture_unref (texture);
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}
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