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gtk2/gdk/gdkdrawable.h
Owen Taylor d12c9702a4 Private function to tell if we have RENDER extension. 
Thu Jan  3 22:18:15 2002  Owen Taylor  <otaylor@redhat.com>

	* gdk/x11/gdkdrawable-x11.c gdk/x11/gdkprivate-x11.h
	(_gdk_x11_have_render): Private function to tell if we have RENDER
	extension.

	* gdk/x11/gdkgc-x11.c (_gdk_x11_gc_get_fg_picture): Return
	None if we don't have RENDER extension.

	* gdk/x11/gdkpango-x11.c (gdk_pango_context_get): Don't
	use Xft unless we have render extension.

	* gdk/x11/gdkdrawable-x11.c (gdk_x11_drawable_get_picture):
	Handle missing render extension.

	* gdk/gdkdraw.c gdk/gdkdrawable.h gdk/gdkpixmap.c gdk/gdkwindow.c
	gdk/gdkinternals.h: Add a private copy_to_image() virtual function
	to the GdkDrawable vtable that extends get_image() to allow
	copying onto existing images.  Make the default implementation of
	get_image() use this so that backends don't have to implement
	both. Add private wrapper _gdk_drawable_copy_to_image().

	* gdk/x11/gdkimage-x11.c gdk/x11/gdkprivate-x11.c
	gdk/x11/gdkdrawable-x11.c (_gdk_x11_copy_to_image): Implement
	copy_to_image() semantics, speed up by using ShmPixmaps and
	XCopyArea when possible, XFlush() after ungrabbing the server,
	generally redo the logic once again.

	* gdk/gdkinternals.h gdk/x11/gdkimage-x11.c
	_gdk_windowing_bits_per_depth(): Function to convert from depth to
	bits-per-pixel. (We assume only one bpp per depth - X requires
	this.)

	* gdk/gdkinternals.h gdk/gdkrgb.c gdk/gdkimage.c: Move the GdkRGB
	scratch image code into a generic _gdk_image_get_scratch() chunk
	of code that we can use other places we need scratch images.

	* gdk/gdkimage.c gdk/x11/gdkimage.c gdk/gdkinternals.h:
	Add _gdk_image_new_for_depth() as the backend
	to _gdk_image_new() to allowing creating images with
	a depth and no visual.

	* gdk/gdkpixbuf-drawable.c: Fix so that getting
	parts of images not at 0,0 actually works.

	* gdk/gdkdrawable.h gdk/gdkinternals.h gdk/gdkdraw.c
	gdk/gdkwindow.c gdk/gdkpixmap.c gdk/gdkpixbuf-render.c:
	 - Add a new GdkDrawableClass vfunc _draw_pixbuf, and
	  _gdk_draw_pixbuf() [ will be made public later ], to allow
	  backends to accelerate drawing pixbufs.
	 - Move the implementation of gdk_pixbuf_render_to_drawable_alpha()
	   to be the default implementation.
	 - Update docs for gdk_pixbuf_render_to_drawable_alpha().
	 - Optimize the default implementation by using
	   _gdk_image_copy_to_pixmap() and scratch shared images, and
	   special casing the compositing.

	* gdk/x11/gdkdrawable-x11.c: Accelerate _gdk_draw_pixbuf()
	with alpha using the RENDER extension.

        * gdk/gdkpixbuf-drawable.c (gdk_pixbuf_get_from_drawable):
	Optimize by _gdk_image_copy_to_pixmap() and scratch images.

	* tests/testrgb.c: Add test for speed of alpha composition,
	reduce the number of iterations since alpha composition
	can be a bit slow.

	* gdk/x11/gdkimage-x11.c gdk/gdkprivate-x11.h (_gdk_x11_image_get_shm_pixmap):
	Private function to get a ShmPixmap for an image, if possible.
2002-01-04 05:58:01 +00:00

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#ifndef __GDK_DRAWABLE_H__
#define __GDK_DRAWABLE_H__
#include <gdk/gdktypes.h>
#include <gdk/gdkgc.h>
#include <gdk/gdkrgb.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef struct _GdkDrawableClass GdkDrawableClass;
#define GDK_TYPE_DRAWABLE (gdk_drawable_get_type ())
#define GDK_DRAWABLE(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GDK_TYPE_DRAWABLE, GdkDrawable))
#define GDK_DRAWABLE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_DRAWABLE, GdkDrawableClass))
#define GDK_IS_DRAWABLE(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GDK_TYPE_DRAWABLE))
#define GDK_IS_DRAWABLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_DRAWABLE))
#define GDK_DRAWABLE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_DRAWABLE, GdkDrawableClass))
struct _GdkDrawable
{
GObject parent_instance;
};
struct _GdkDrawableClass
{
GObjectClass parent_class;
GdkGC *(*create_gc) (GdkDrawable *drawable,
GdkGCValues *values,
GdkGCValuesMask mask);
void (*draw_rectangle) (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height);
void (*draw_arc) (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
void (*draw_polygon) (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints);
void (*draw_text) (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length);
void (*draw_text_wc) (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length);
void (*draw_drawable) (GdkDrawable *drawable,
GdkGC *gc,
GdkDrawable *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
void (*draw_points) (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
void (*draw_segments) (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs);
void (*draw_lines) (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
void (*draw_glyphs) (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs);
void (*draw_image) (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
gint (*get_depth) (GdkDrawable *drawable);
void (*get_size) (GdkDrawable *drawable,
gint *width,
gint *height);
void (*set_colormap) (GdkDrawable *drawable,
GdkColormap *cmap);
GdkColormap* (*get_colormap) (GdkDrawable *drawable);
GdkVisual* (*get_visual) (GdkDrawable *drawable);
GdkImage* (*get_image) (GdkDrawable *drawable,
gint x,
gint y,
gint width,
gint height);
GdkRegion* (*get_clip_region) (GdkDrawable *drawable);
GdkRegion* (*get_visible_region) (GdkDrawable *drawable);
GdkDrawable* (*get_composite_drawable) (GdkDrawable *drawable,
gint x,
gint y,
gint width,
gint height,
gint *composite_x_offset,
gint *composite_y_offset);
void (*_draw_pixbuf) (GdkDrawable *drawable,
GdkGC *gc,
GdkPixbuf *pixbuf,
gint src_x,
gint src_y,
gint dest_x,
gint dest_y,
gint width,
gint height,
GdkRgbDither dither,
gint x_dither,
gint y_dither);
GdkImage* (*_copy_to_image) (GdkDrawable *drawable,
GdkImage *image,
gint src_x,
gint src_y,
gint dest_x,
gint dest_y,
gint width,
gint height);
void (*_gdk_reserved1) (void);
void (*_gdk_reserved2) (void);
void (*_gdk_reserved3) (void);
void (*_gdk_reserved4) (void);
void (*_gdk_reserved5) (void);
void (*_gdk_reserved6) (void);
};
GType gdk_drawable_get_type (void);
/* Manipulation of drawables
*/
#ifndef GDK_DISABLE_DEPRECATED
void gdk_drawable_set_data (GdkDrawable *drawable,
const gchar *key,
gpointer data,
GDestroyNotify destroy_func);
gpointer gdk_drawable_get_data (GdkDrawable *drawable,
const gchar *key);
#endif /* GDK_DISABLE_DEPRECATED */
void gdk_drawable_get_size (GdkDrawable *drawable,
gint *width,
gint *height);
void gdk_drawable_set_colormap (GdkDrawable *drawable,
GdkColormap *colormap);
GdkColormap* gdk_drawable_get_colormap (GdkDrawable *drawable);
GdkVisual* gdk_drawable_get_visual (GdkDrawable *drawable);
gint gdk_drawable_get_depth (GdkDrawable *drawable);
#ifndef GDK_DISABLE_DEPRECATED
GdkDrawable* gdk_drawable_ref (GdkDrawable *drawable);
void gdk_drawable_unref (GdkDrawable *drawable);
#endif /* GDK_DISABLE_DEPRECATED */
/* Drawing
*/
void gdk_draw_point (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y);
void gdk_draw_line (GdkDrawable *drawable,
GdkGC *gc,
gint x1,
gint y1,
gint x2,
gint y2);
void gdk_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height);
void gdk_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
void gdk_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints);
#ifndef GDK_DISABLE_DEPRECATED
void gdk_draw_string (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *string);
void gdk_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length);
void gdk_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length);
#endif /* GDK_DISABLE_DEPRECATED */
void gdk_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkDrawable *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
void gdk_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
void gdk_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
void gdk_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs);
void gdk_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
void gdk_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs);
void gdk_draw_layout_line (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
PangoLayoutLine *line);
void gdk_draw_layout (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
PangoLayout *layout);
void gdk_draw_layout_line_with_colors (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
PangoLayoutLine *line,
GdkColor *foreground,
GdkColor *background);
void gdk_draw_layout_with_colors (GdkDrawable *drawable,
GdkGC *gc,
gint x,
gint y,
PangoLayout *layout,
GdkColor *foreground,
GdkColor *background);
#ifndef GDK_DISABLE_DEPRECATED
#define gdk_draw_pixmap gdk_draw_drawable
#define gdk_draw_bitmap gdk_draw_drawable
#endif /* GDK_DISABLE_DEPRECATED */
GdkImage* gdk_drawable_get_image (GdkDrawable *drawable,
gint x,
gint y,
gint width,
gint height);
GdkRegion *gdk_drawable_get_clip_region (GdkDrawable *drawable);
GdkRegion *gdk_drawable_get_visible_region (GdkDrawable *drawable);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GDK_DRAWABLE_H__ */
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