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1883035d34
... and use it in rendernodes. Setting up textures for diffing is done via gdk_texture_set_diff() which should only be used during texture construction. Note that the pointers to next/previous are allowed to dangle if one of the textures is finalized, but that's fine because we always check both textures' links to each other before we consider the pointer valid.
69 lines
3.1 KiB
C
69 lines
3.1 KiB
C
#pragma once
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#include "gdktexture.h"
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#include "gdkenums.h"
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G_BEGIN_DECLS
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#define GDK_TEXTURE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_TEXTURE, GdkTextureClass))
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#define GDK_IS_TEXTURE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_TEXTURE))
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#define GDK_TEXTURE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_TEXTURE, GdkTextureClass))
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struct _GdkTexture
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{
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GObject parent_instance;
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GdkMemoryFormat format;
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int width;
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int height;
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gpointer render_key;
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gpointer render_data;
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GDestroyNotify render_notify;
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/* for diffing swapchain-like textures.
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* Links are only valid if both textures agree on them */
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gpointer next_texture; /* atomic, no reference, may be invalid pointer */
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gpointer previous_texture; /* no reference, may be invalid pointer */
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cairo_region_t *diff_to_previous;
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};
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struct _GdkTextureClass {
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GObjectClass parent_class;
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/* mandatory: Download in the given format into data */
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void (* download) (GdkTexture *texture,
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GdkMemoryFormat format,
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guchar *data,
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gsize stride);
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};
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gboolean gdk_texture_can_load (GBytes *bytes);
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GdkTexture * gdk_texture_new_for_surface (cairo_surface_t *surface);
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cairo_surface_t * gdk_texture_download_surface (GdkTexture *texture);
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void gdk_texture_do_download (GdkTexture *texture,
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GdkMemoryFormat format,
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guchar *data,
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gsize stride);
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void gdk_texture_diff (GdkTexture *self,
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GdkTexture *other,
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cairo_region_t *region);
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void gdk_texture_set_diff (GdkTexture *self,
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GdkTexture *previous,
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cairo_region_t *diff);
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gboolean gdk_texture_set_render_data (GdkTexture *self,
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gpointer key,
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gpointer data,
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GDestroyNotify notify);
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void gdk_texture_clear_render_data (GdkTexture *self);
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gpointer gdk_texture_get_render_data (GdkTexture *self,
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gpointer key);
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G_END_DECLS
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