gtk/gdk/linux-fb/mispans.h

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/***********************************************************
Copyright 1989, 1998 The Open Group
All Rights Reserved.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/
/* $TOG: mispans.h /main/5 1998/02/09 14:48:48 kaleb $ */
typedef struct {
int count; /* number of spans */
i2000-11-22 Alexander Larsson <alexl@redhat.com> * gdk/gdktypes.h: Add new type GdkSpan * docs/reference/gdk/gdk-sections.txt, docs/reference/gdk/tmpl/regions.sgml, gdk/gdkregion-generic.c, gdk/gdkregion.h: Implement and document gdk_region_spans_intersect_foreach. * gdk/linux-fb/Makefile.am, gdk/linux-fb/gdkrender-fb.c: Add new file gdkrender-fb.c which contains all core rendering code. Add gdk_fb_fill_rectangle_generic (old rectangle code) and gdk_fb_fill_rectangle_simple_16, gdk_fb_fill_rectangle_simple_32 (optimized rectangle fillers). * gdk/linux-fb/gdkdrawable-fb2.c: Move all rendering code to gdkrender-fb.c. Change from using GdkRectangles and GdkSegments for spans to GdkSpan. Use the new span intersection functions in gdk_fb_fill_spans. gdk_fb_draw_rectangle() clips filled rectangles and calls gc->fill_rectangle with the result. gdk_fb_fill_spans() gets extra argument "sorted". * gdk/linux-fb/gdkevents-fb.c: Remove unused includes and defines. New function gdk_fb_get_time() to get correct time for events. * gdk/linux-fb/gdkinput-ps2.c: Use gdk method of generating multiple-clicks (gdk_event_button_generate) Make sure to set the time of all events. * gdk/linux-fb/gdkmain-fb.c: Use gdk_fb_get_time (). * gdk/linux-fb/gdkprivate-fb.h: New virtual GC calls: fill_span & fill_rectangle. Export gdk_fb_get_time(). gdk_fb_fill_spans() gets extra argument "sorted". * gdk/linux-fb/mi*.c: Use GdkSpan instead of GdkRectangle. Pass correct sorted to gdk_fb_fill_spans. (sorted value taken from XFree 4 source)
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GdkSpan* points; /* pointer to list of start points */
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} Spans;
typedef struct {
int size; /* Total number of *Spans allocated */
int count; /* Number of *Spans actually in group */
Spans *group; /* List of Spans */
int ymin, ymax; /* Min, max y values encountered */
} SpanGroup;
/* Initialize SpanGroup. MUST BE DONE before use. */
extern void miInitSpanGroup(SpanGroup *spanGroup);
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/* Add a Spans to a SpanGroup. The spans MUST BE in y-sorted order */
extern void miAppendSpans(SpanGroup *spanGroup, SpanGroup *otherGroup,
Spans *spans);
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/* Paint a span group, possibly with some overlap */
extern void miFillSpanGroup(GdkDrawable* pDraw, GdkGC* pGC,
SpanGroup *spanGroup);
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/* Paint a span group, insuring that each pixel is painted at most once */
extern void miFillUniqueSpanGroup(GdkDrawable* pDraw, GdkGC* pGC,
SpanGroup *spanGroup);
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/* Free up data in a span group. MUST BE DONE or you'll suffer memory leaks */
extern void miFreeSpanGroup(SpanGroup *spanGroup);
extern void miSubtractSpans(SpanGroup *spanGroup, Spans *sub);
extern void miDisposeSpanGroup(SpanGroup *spanGroup);
extern int miClipSpans(GdkRegion* prgnDst, GdkPoint* ppt,
int *pwidth, int nspans, GdkPoint* pptNew,
int *pwidthNew, int fSorted);
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/* Rops which must use span groups */
#define miSpansCarefulRop(rop) (((rop) & 0xc) == 0x8 || ((rop) & 0x3) == 0x2)
#define miSpansEasyRop(rop) (!miSpansCarefulRop(rop))