Commit 94239d14 authored by Owen Taylor's avatar Owen Taylor Committed by Owen Taylor

Add a function gdk_window_get_internal_paint_info(), so that using X

Fri Jul 13 15:33:32 2001  Owen Taylor  <otaylor@redhat.com>

	* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
	so that using X functions on a GdkWindow is possible, if
	a little hairy.

	* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
	and ts_origin of a GC, so that external parties can offset/restore
	a GC, when using gdk_window_get_internal_paint_info().
parent 03496763
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
Fri Jul 13 15:33:32 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdkwindow.[ch]: Add a function gdk_window_get_internal_paint_info(),
so that using X functions on a GdkWindow is possible, if
a little hairy.
* gdk/gdkgc.c (gdk_gc_offset): Add a function to offset the clip
and ts_origin of a GC, so that external parties can offset/restore
a GC, when using gdk_window_get_internal_paint_info().
2001-07-17 Darin Adler <darin@bentspoon.com>
* .cvsignore: Ignore the sgml directory made by gtkdoc.
......
......@@ -366,6 +366,39 @@ gdk_gc_set_dashes (GdkGC *gc,
GDK_GC_GET_CLASS (gc)->set_dashes (gc, dash_offset, dash_list, n);
}
/**
* gdk_gc_offset:
* @gc: a #GdkGC
* @x_offset: amount by which to offset the GC in the X direction
* @y_offset: amount by which to offset the GC in the Y direction
*
* Offset attributes such as the clip and tile-stipple origins
* of the GC so that drawing at x - x_offset, y - y_offset with
* the offset GC has the same effect as drawing at x, y with the original
* GC.
**/
void
gdk_gc_offset (GdkGC *gc,
gint x_offset,
gint y_offset)
{
if (x_offset != 0 || y_offset != 0)
{
GdkGCValues values;
values.clip_x_origin = gc->clip_x_origin - x_offset;
values.clip_y_origin = gc->clip_y_origin - y_offset;
values.ts_x_origin = gc->ts_x_origin - x_offset;
values.ts_y_origin = gc->ts_y_origin - y_offset;
gdk_gc_set_values (gc, &values,
GDK_GC_CLIP_X_ORIGIN |
GDK_GC_CLIP_Y_ORIGIN |
GDK_GC_TS_X_ORIGIN |
GDK_GC_TS_Y_ORIGIN);
}
}
/**
* gdk_gc_set_colormap:
* @gc: a #GdkGC
......
......@@ -237,6 +237,9 @@ void gdk_gc_set_dashes (GdkGC *gc,
gint dash_offset,
gint8 dash_list[],
gint n);
void gdk_gc_offset (GdkGC *gc,
gint x_offset,
gint y_offset);
void gdk_gc_copy (GdkGC *dst_gc,
GdkGC *src_gc);
......
......@@ -979,6 +979,59 @@ gdk_window_get_offsets (GdkWindow *window,
_gdk_windowing_window_get_offsets (window, x_offset, y_offset);
}
/**
* gdk_window_get_internal_paint_info:
* @window: a #GdkWindow
* @real_drawable: location to store the drawable to which drawing should be done.
* @x_offset: location to store the X offset between coordinates in @window, and
* the underlying window system primitive coordinates for *@real_drawable.
* @y_offset: location to store the Y offset between coordinates in @window, and
* the underlying window system primitive coordinates for *@real_drawable.
*
* If you bypass the GDK layer and use windowing system primitives to
* draw directly onto a #GdkWindow, then you need to deal with two
* details: there may be an offset between GDK coordinates and windowing
* system coordinates, and GDK may have redirected drawing to a offscreen
* pixmap as the result of a gdk_window_begin_paint_region() calls.
* This function allows retrieving the information you need to compensate
* for these effects.
*
* This function exposes details of the GDK implementation, and is thus
* likely to change in future releases of GDK.
**/
void
gdk_window_get_internal_paint_info (GdkWindow *window,
GdkDrawable **real_drawable,
gint *x_offset,
gint *y_offset)
{
gint x_off, y_off;
GdkWindowObject *private;
g_return_if_fail (GDK_IS_WINDOW (window));
private = (GdkWindowObject *)window;
if (real_drawable)
{
if (private->paint_stack)
{
GdkWindowPaint *paint = private->paint_stack->data;
*real_drawable = paint->pixmap;
}
else
*real_drawable = window;
}
gdk_window_get_offsets (window, &x_off, &y_off);
if (x_offset)
*x_offset = x_off;
if (y_offset)
*y_offset = y_off;
}
#define OFFSET_GC(gc) \
gint x_offset, y_offset; \
gint old_clip_x = gc->clip_x_origin; \
......
......@@ -507,6 +507,11 @@ void gdk_window_constrain_size (GdkGeometry *geometry,
gint *new_width,
gint *new_height);
void gdk_window_get_internal_paint_info (GdkWindow *window,
GdkDrawable **real_drawable,
gint *x_offset,
gint *y_offset);
GdkPointerHooks *gdk_set_pointer_hooks (const GdkPointerHooks *new_hooks);
#ifdef __cplusplus
......
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