* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
+#include <config.h>
#include "gdkdrawable.h"
#include "gdkinternals.h"
#include "gdkwindow.h"
/* Default implementation for clip and visible region is the same */
klass->get_clip_region = gdk_drawable_real_get_visible_region;
klass->get_visible_region = gdk_drawable_real_get_visible_region;
- klass->_draw_pixbuf = gdk_drawable_real_draw_pixbuf;
+ klass->draw_pixbuf = gdk_drawable_real_draw_pixbuf;
}
/* Manipulation of drawables
* Gets the #GdkScreen associated with a #GdkDrawable.
*
* Return value: the #GdkScreen associated with @drawable
+ *
+ * Since: 2.2
**/
GdkScreen*
gdk_drawable_get_screen(GdkDrawable *drawable)
* Gets the #GdkDisplay associated with a #GdkDrawable.
*
* Return value: the #GdkDisplay associated with @drawable
+ *
+ * Since: 2.2
**/
GdkDisplay*
gdk_drawable_get_display (GdkDrawable *drawable)
GdkDrawable*
gdk_drawable_ref (GdkDrawable *drawable)
{
- return (GdkDrawable *) g_object_ref (G_OBJECT (drawable));
+ return (GdkDrawable *) g_object_ref (drawable);
}
/**
{
g_return_if_fail (GDK_IS_DRAWABLE (drawable));
- g_object_unref (G_OBJECT (drawable));
+ g_object_unref (drawable);
}
/* Drawing
*/
+
+/**
+ * gdk_draw_point:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @x: the x coordinate of the point.
+ * @y: the y coordinate of the point.
+ *
+ * Draws a point, using the foreground color and other attributes of
+ * the #GdkGC.
+ **/
void
gdk_draw_point (GdkDrawable *drawable,
GdkGC *gc,
GDK_DRAWABLE_GET_CLASS (drawable)->draw_points (drawable, gc, &point, 1);
}
+/**
+ * gdk_draw_line:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @x1_: the x coordinate of the start point.
+ * @y1_: the y coordinate of the start point.
+ * @x2_: the x coordinate of the end point.
+ * @y2_: the y coordinate of the end point.
+ *
+ * Draws a line, using the foreground color and other attributes of
+ * the #GdkGC.
+ **/
void
gdk_draw_line (GdkDrawable *drawable,
GdkGC *gc,
GDK_DRAWABLE_GET_CLASS (drawable)->draw_segments (drawable, gc, &segment, 1);
}
+/**
+ * gdk_draw_rectangle:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @filled: %TRUE if the rectangle should be filled.
+ * @x: the x coordinate of the left edge of the rectangle.
+ * @y: the y coordinate of the top edge of the rectangle.
+ * @width: the width of the rectangle.
+ * @height: the height of the rectangle.
+ *
+ * Draws a rectangular outline or filled rectangle, using the foreground color
+ * and other attributes of the #GdkGC.
+ *
+ * A rectangle drawn filled is 1 pixel smaller in both dimensions than a
+ * rectangle outlined. Calling
+ * <literal>gdk_draw_rectangle (window, gc, TRUE, 0, 0, 20, 20)</literal>
+ * results in a filled rectangle 20 pixels wide and 20 pixels high. Calling
+ * <literal>gdk_draw_rectangle (window, gc, FALSE, 0, 0, 20, 20)</literal>
+ * results in an outlined rectangle with corners at (0, 0), (0, 20), (20, 20),
+ * and (20, 0), which makes it 21 pixels wide and 21 pixels high.
+ **/
void
gdk_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
- gint filled,
+ gboolean filled,
gint x,
gint y,
gint width,
width, height);
}
+/**
+ * gdk_draw_arc:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @filled: %TRUE if the arc should be filled, producing a 'pie slice'.
+ * @x: the x coordinate of the left edge of the bounding rectangle.
+ * @y: the y coordinate of the top edge of the bounding rectangle.
+ * @width: the width of the bounding rectangle.
+ * @height: the height of the bounding rectangle.
+ * @angle1: the start angle of the arc, relative to the 3 o'clock position,
+ * counter-clockwise, in 1/64ths of a degree.
+ * @angle2: the end angle of the arc, relative to @angle1, in 1/64ths
+ * of a degree.
+ *
+ * Draws an arc or a filled 'pie slice'. The arc is defined by the bounding
+ * rectangle of the entire ellipse, and the start and end angles of the part
+ * of the ellipse to be drawn.
+ **/
void
gdk_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
- gint filled,
+ gboolean filled,
gint x,
gint y,
gint width,
x, y, width, height, angle1, angle2);
}
+/**
+ * gdk_draw_polygon:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @filled: %TRUE if the polygon should be filled. The polygon is closed
+ * automatically, connecting the last point to the first point if
+ * necessary.
+ * @points: an array of #GdkPoint structures specifying the points making
+ * up the polygon.
+ * @npoints: the number of points.
+ *
+ * Draws an outlined or filled polygon.
+ **/
void
gdk_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
- gint filled,
+ gboolean filled,
GdkPoint *points,
gint npoints)
{
*
* Interface changed: add "GdkFont *font" to specify font or fontset explicitely
*/
+/**
+ * gdk_draw_string:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @font: a #GdkFont.
+ * @gc: a #GdkGC.
+ * @x: the x coordinate of the left edge of the text.
+ * @y: the y coordinate of the baseline of the text.
+ * @string: the string of characters to draw.
+ *
+ * Draws a string of characters in the given font or fontset.
+ *
+ * Deprecated: Use gdk_draw_layout() instead.
+ **/
void
gdk_draw_string (GdkDrawable *drawable,
GdkFont *font,
*
* Interface changed: add "GdkFont *font" to specify font or fontset explicitely
*/
+/**
+ * gdk_draw_text:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @font: a #GdkFont.
+ * @gc: a #GdkGC.
+ * @x: the x coordinate of the left edge of the text.
+ * @y: the y coordinate of the baseline of the text.
+ * @text: the characters to draw.
+ * @text_length: the number of characters of @text to draw.
+ *
+ * Draws a number of characters in the given font or fontset.
+ *
+ * Deprecated: Use gdk_draw_layout() instead.
+ **/
void
gdk_draw_text (GdkDrawable *drawable,
GdkFont *font,
GDK_DRAWABLE_GET_CLASS (drawable)->draw_text (drawable, font, gc, x, y, text, text_length);
}
+/**
+ * gdk_draw_text_wc:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @font: a #GdkFont.
+ * @gc: a #GdkGC.
+ * @x: the x coordinate of the left edge of the text.
+ * @y: the y coordinate of the baseline of the text.
+ * @text: the wide characters to draw.
+ * @text_length: the number of characters to draw.
+ *
+ * Draws a number of wide characters using the given font of fontset.
+ * If the font is a 1-byte font, the string is converted into 1-byte
+ * characters (discarding the high bytes) before output.
+ *
+ * Deprecated: Use gdk_draw_layout() instead.
+ **/
void
gdk_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
* gdk_draw_drawable:
* @drawable: a #GdkDrawable
* @gc: a #GdkGC sharing the drawable's visual and colormap
- * @src: another #GdkDrawable
+ * @src: the source #GdkDrawable, which may be the same as @drawable
* @xsrc: X position in @src of rectangle to draw
* @ysrc: Y position in @src of rectangle to draw
* @xdest: X position in @drawable where the rectangle should be drawn
xdest, ydest,
width, height);
- g_object_unref (G_OBJECT (composite));
+ g_object_unref (composite);
}
+/**
+ * gdk_draw_image:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @image: the #GdkImage to draw.
+ * @xsrc: the left edge of the source rectangle within @image.
+ * @ysrc: the top of the source rectangle within @image.
+ * @xdest: the x coordinate of the destination within @drawable.
+ * @ydest: the y coordinate of the destination within @drawable.
+ * @width: the width of the area to be copied, or -1 to make the area
+ * extend to the right edge of @image.
+ * @height: the height of the area to be copied, or -1 to make the area
+ * extend to the bottom edge of @image.
+ *
+ * Draws a #GdkImage onto a drawable.
+ * The depth of the #GdkImage must match the depth of the #GdkDrawable.
+ **/
void
gdk_draw_image (GdkDrawable *drawable,
GdkGC *gc,
}
/**
- * _gdk_draw_pixbuf:
+ * gdk_draw_pixbuf:
* @drawable: Destination drawable.
* @gc: a #GdkGC, used for clipping, or %NULL
* @pixbuf: a #GdkPixbuf
* @dest_y: Destination Y coordinate within drawable.
* @width: Width of region to render, in pixels, or -1 to use pixbuf width.
* @height: Height of region to render, in pixels, or -1 to use pixbuf height.
- * @dither: Dithering mode for GdkRGB.
+ * @dither: Dithering mode for #GdkRGB.
* @x_dither: X offset for dither.
* @y_dither: Y offset for dither.
*
* Renders a rectangular portion of a pixbuf to a drawable. The destination
* drawable must have a colormap. All windows have a colormap, however, pixmaps
- * only have colormap by default if they were created with a non-NULL window argument.
- * Otherwise a colormap must be set on them with gdk_drawable_set_colormap.
+ * only have colormap by default if they were created with a non-%NULL window
+ * argument. Otherwise a colormap must be set on them with
+ * gdk_drawable_set_colormap().
*
- * On older X servers, rendering pixbufs with an alpha channel involves round trips
- * to the X server, and may be somewhat slow.
+ * On older X servers, rendering pixbufs with an alpha channel involves round
+ * trips to the X server, and may be somewhat slow.
+ *
+ * The clip mask of @gc is ignored, but clip rectangles and clip regions work
+ * fine.
+ *
+ * Since: 2.2
**/
void
-_gdk_draw_pixbuf (GdkDrawable *drawable,
+gdk_draw_pixbuf (GdkDrawable *drawable,
GdkGC *gc,
GdkPixbuf *pixbuf,
gint src_x,
if (height == -1)
height = gdk_pixbuf_get_height (pixbuf);
- GDK_DRAWABLE_GET_CLASS (drawable)->_draw_pixbuf (drawable, gc, pixbuf,
- src_x, src_y, dest_x, dest_y, width, height,
- dither, x_dither, y_dither);
+ GDK_DRAWABLE_GET_CLASS (drawable)->draw_pixbuf (drawable, gc, pixbuf,
+ src_x, src_y, dest_x, dest_y, width, height,
+ dither, x_dither, y_dither);
}
+/**
+ * gdk_draw_points:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @points: an array of #GdkPoint structures.
+ * @npoints: the number of points to be drawn.
+ *
+ * Draws a number of points, using the foreground color and other
+ * attributes of the #GdkGC.
+ **/
void
gdk_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GDK_DRAWABLE_GET_CLASS (drawable)->draw_points (drawable, gc, points, npoints);
}
+/**
+ * gdk_draw_segments:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @segs: an array of #GdkSegment structures specifying the start and
+ * end points of the lines to be drawn.
+ * @nsegs: the number of line segments to draw, i.e. the size of the
+ * @segs array.
+ *
+ * Draws a number of unconnected lines.
+ **/
void
gdk_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GDK_DRAWABLE_GET_CLASS (drawable)->draw_segments (drawable, gc, segs, nsegs);
}
+/**
+ * gdk_draw_lines:
+ * @drawable: a #GdkDrawable (a #GdkWindow or a #GdkPixmap).
+ * @gc: a #GdkGC.
+ * @points: an array of #GdkPoint structures specifying the endpoints of the
+ * @npoints: the size of the @points array.
+ *
+ * Draws a series of lines connecting the given points.
+ * The way in which joins between lines are draw is determined by the
+ * #GdkCapStyle value in the #GdkGC. This can be set with
+ * gdk_gc_set_line_attributes().
+ **/
void
gdk_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
-
g_return_if_fail (GDK_IS_DRAWABLE (drawable));
g_return_if_fail (points != NULL);
g_return_if_fail (GDK_IS_GC (gc));
/**
- * _gdk_drawable_copy_to_image:
+ * gdk_drawable_copy_to_image:
* @drawable: a #GdkDrawable
* @image: a #GdkDrawable, or %NULL if a new @image should be created.
* @src_x: x coordinate on @drawable
* and copies into that. See gdk_drawable_get_image() for further details.
*
* Return value: @image, or a new a #GdkImage containing the contents
- of @drawable
+ * of @drawable
+ *
+ * Since: 2.4
**/
GdkImage*
-_gdk_drawable_copy_to_image (GdkDrawable *drawable,
- GdkImage *image,
- gint src_x,
- gint src_y,
- gint dest_x,
- gint dest_y,
- gint width,
- gint height)
+gdk_drawable_copy_to_image (GdkDrawable *drawable,
+ GdkImage *image,
+ gint src_x,
+ gint src_y,
+ gint dest_x,
+ gint dest_y,
+ gint width,
+ gint height)
{
GdkDrawable *composite;
gint composite_x_offset = 0;
dest_x, dest_y,
width, height);
- g_object_unref (G_OBJECT (composite));
+ g_object_unref (composite);
if (!image && retval)
{
y - composite_y_offset,
width, height);
- g_object_unref (G_OBJECT (composite));
+ g_object_unref (composite);
cmap = gdk_drawable_get_colormap (drawable);
gint width,
gint height)
{
- return _gdk_drawable_copy_to_image (drawable, NULL, x, y, 0, 0, width, height);
+ return gdk_drawable_copy_to_image (drawable, NULL, x, y, 0, 0, width, height);
}
static GdkDrawable*
*composite_x_offset = 0;
*composite_y_offset = 0;
- return GDK_DRAWABLE (g_object_ref (G_OBJECT (drawable)));
+ return g_object_ref (drawable);
}
/**
gint x_dither,
gint y_dither)
{
- gboolean free_gc = FALSE;
GdkPixbuf *composited = NULL;
gint dwidth, dheight;
GdkRegion *clip;
return;
/* Actually draw */
-
if (!gc)
- {
- gc = gdk_gc_new (drawable);
- free_gc = TRUE;
- }
+ gc = _gdk_drawable_get_scratch_gc (drawable, FALSE);
if (pixbuf->has_alpha)
{
width1, height1,
gdk_drawable_get_depth (drawable), &xs0, &ys0);
- _gdk_drawable_copy_to_image (drawable, image,
- dest_x + x0, dest_y + y0,
- xs0, ys0,
- width1, height1);
+ gdk_drawable_copy_to_image (drawable, image,
+ dest_x + x0, dest_y + y0,
+ xs0, ys0,
+ width1, height1);
(*composite_func) (pixbuf->pixels + (src_y + y0) * pixbuf->rowstride + (src_x + x0) * 4,
pixbuf->rowstride,
(guchar*)image->mem + ys0 * image->bpl + xs0 * image->bpp,
out:
if (composited)
- g_object_unref (G_OBJECT (composited));
+ g_object_unref (composited);
+}
+
+/**
+ * _gdk_drawable_get_scratch_gc:
+ * @drawable: A #GdkDrawable
+ * @graphics_exposures: Whether the returned #GdkGC should generate graphics exposures
+ *
+ * Returns a #GdkGC suitable for drawing on @drawable. The #GdkGC has
+ * the standard values for @drawable, except for the graphics_exposures
+ * field which is determined by the @graphics_exposures parameter.
+ *
+ * The foreground color of the returned #GdkGC is undefined. The #GdkGC
+ * must not be altered in any way, except to change its foreground color.
+ *
+ * Return value: A #GdkGC suitable for drawing on @drawable
+ *
+ * Since: 2.4
+ **/
+GdkGC *
+_gdk_drawable_get_scratch_gc (GdkDrawable *drawable,
+ gboolean graphics_exposures)
+{
+ GdkScreen *screen;
+ gint depth;
+
+ g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
+
+ screen = gdk_drawable_get_screen (drawable);
+
+ g_return_val_if_fail (!screen->closed, NULL);
+
+ depth = gdk_drawable_get_depth (drawable) - 1;
+
+ if (graphics_exposures)
+ {
+ if (!screen->exposure_gcs[depth])
+ {
+ GdkGCValues values;
+ GdkGCValuesMask mask;
- if (free_gc)
- gdk_gc_unref (gc);
+ values.graphics_exposures = TRUE;
+ mask = GDK_GC_EXPOSURES;
+
+ screen->exposure_gcs[depth] =
+ gdk_gc_new_with_values (drawable, &values, mask);
+ }
+
+ return screen->exposure_gcs[depth];
+ }
+ else
+ {
+ if (!screen->normal_gcs[depth])
+ {
+ screen->normal_gcs[depth] =
+ gdk_gc_new (drawable);
+ }
+
+ return screen->normal_gcs[depth];
+ }
}
projects / ~andy / gtk / blobdiff