/*
* Note: The behavior is correct even if src and dest regions are the same.
*/
INT WINAPI
CombineRgn(HRGN hDest, HRGN hSrc1, HRGN hSrc2, INT mode)
{
MWRGNOBJ *destObj = (MWRGNOBJ *) GDI_GetObjPtr( hDest, OBJ_REGION);
INT result = ERRORREGION;
/*TRACE(region, " %04x,%04x -> %04x mode=%x\n", hSrc1, hSrc2, hDest,mode);*/
if (destObj)
{
MWRGNOBJ *src1Obj = (MWRGNOBJ *) GDI_GetObjPtr( hSrc1, OBJ_REGION);
if (src1Obj)
{
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(src1Obj->rgn);*/
if (mode == RGN_COPY)
{
GdCopyRegion( destObj->rgn, src1Obj->rgn );
result = destObj->rgn->type;
}
else
{
MWRGNOBJ *src2Obj = (MWRGNOBJ *) GDI_GetObjPtr( hSrc2, OBJ_REGION);
if (src2Obj)
{
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(src2Obj->rgn);*/
switch (mode)
{
case RGN_AND:
GdIntersectRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn);
break;
case RGN_OR:
GdUnionRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
case RGN_XOR:
GdXorRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
case RGN_DIFF:
GdSubtractRegion( destObj->rgn, src1Obj->rgn, src2Obj->rgn );
break;
}
result = destObj->rgn->type;
}
}
}
/*TRACE(region, "dump:\n");
if(TRACE_ON(region))
REGION_DumpRegion(destObj->rgn);*/
}
return result;
}
/*
* Prepare to do drawing in a window or pixmap using the specified
* graphics context. Returns the drawable pointer if successful,
* and the type of drawing id that was supplied. Returns the special value
* GR_DRAW_TYPE_NONE if an error is generated, or if drawing is useless.
*/
GR_DRAW_TYPE GsPrepareDrawing(GR_DRAW_ID id, GR_GC_ID gcid, GR_DRAWABLE **retdp)
{
GR_WINDOW *wp; /* found window */
GR_PIXMAP *pp; /* found pixmap */
GR_GC *gcp; /* found graphics context */
GR_FONT *fontp;
GR_REGION *regionp; /* user clipping region */
MWCLIPREGION *reg;
PMWFONT pf;
*retdp = NULL;
gcp = GsFindGC(gcid);
if (gcp == NULL)
return GR_DRAW_TYPE_NONE;
/*
* If the graphics context is not the current one, then
* make it the current one and remember to update it.
*/
if (gcp != curgcp) {
curgcp = gcp;
gcp->changed = GR_TRUE;
}
/*
* Look for window or pixmap id
*/
pp = NULL;
wp = GsFindWindow(id);
if (wp == NULL) {
pp = GsFindPixmap(id);
if (pp == NULL)
return GR_DRAW_TYPE_NONE;
#if DYNAMICREGIONS
reg = GdAllocRectRegion(0, 0, pp->psd->xvirtres,
pp->psd->yvirtres);
/* intersect with user region if any*/
if (gcp->regionid) {
regionp = GsFindRegion(gcp->regionid);
if (regionp)
GdIntersectRegion(reg, reg, regionp->rgn);
}
GdSetClipRegion(pp->psd, reg);
#else
{
MWCLIPRECT cliprect;
/* FIXME: setup pixmap clipping, different from windows*/
cliprect.x = 0;
cliprect.y = 0;
cliprect.width = pp->psd->xvirtres;
cliprect.height = pp->psd->yvirtres;
GdSetClipRects(pp->psd, 1, &cliprect);
}
#endif
/* reset clip cache for next window draw*/
clipwp = NULL;
} else {
if (!wp->output) {
GsError(GR_ERROR_INPUT_ONLY_WINDOW, id);
return GR_DRAW_TYPE_NONE;
}
if (wp->unmapcount)
return GR_DRAW_TYPE_NONE;
/*
* If the window is not the currently clipped one,
* then make it the current one and define its clip rectangles.
*/
if (wp != clipwp || gcp->changed) {
/* find user region for intersect*/
if (gcp->regionid)
regionp = GsFindRegion(gcp->regionid);
else regionp = NULL;
/*
* Special handling if user region is not at offset 0,0
*/
if (regionp && (gcp->xoff || gcp->yoff)) {
MWCLIPREGION *local = GdAllocRegion();
GdCopyRegion(local, regionp->rgn);
GdOffsetRegion(local, gcp->xoff, gcp->yoff);
GsSetClipWindow(wp, local,
gcp->mode & ~GR_MODE_DRAWMASK);
GdDestroyRegion(local);
} else {
GsSetClipWindow(wp, regionp? regionp->rgn: NULL,
gcp->mode & ~GR_MODE_DRAWMASK);
}
}
}
/*
* If the graphics context has been changed, then tell the
* device driver about it.
*/
if (gcp->changed) {
GdSetForeground(GdFindColor(gcp->foreground));
GdSetBackground(GdFindColor(gcp->background));
GdSetMode(gcp->mode & GR_MODE_DRAWMASK);
GdSetUseBackground(gcp->usebackground);
fontp = GsFindFont(gcp->fontid);
pf = fontp? fontp->pfont: stdfont;
GdSetFont(pf);
gcp->changed = GR_FALSE;
}
*retdp = wp? (GR_DRAWABLE *)wp: (GR_DRAWABLE *)pp;
return wp? GR_DRAW_TYPE_WINDOW: GR_DRAW_TYPE_PIXMAP;
}
/*
* Set the clip rectangles for a window taking into account other
* windows that may be obscuring it. The windows that may be obscuring
* this one are the siblings of each direct ancestor which are higher
* in priority than those ancestors. Also, each parent limits the visible
* area of the window.
*/
void
MwSetClipWindow(HDC hdc)
{
HWND wp = hdc->hwnd;
HWND pwp; /* parent window */
HWND sibwp; /* sibling windows */
MWCOORD diff; /* difference in coordinates */
PRECT prc; /* client or window rectangle*/
MWCLIPREGION *vis, *r;
MWCOORD x, y, width, height;
/*
* Start with the rectangle for the complete window.
* We will then cut pieces out of it as needed.
*/
prc = MwIsClientDC(hdc)? &wp->clirect: &wp->winrect;
x = prc->left;
y = prc->top;
width = prc->right - prc->left;
height = prc->bottom - prc->top;
/*
* First walk upwards through all parent windows,
* and restrict the visible part of this window to the part
* that shows through all of those parent windows client areas.
*/
pwp = wp;
while (pwp != rootwp) {
pwp = pwp->parent;
diff = pwp->clirect.left - x;
if (diff > 0) {
width -= diff;
x = pwp->clirect.left;
}
diff = pwp->clirect.right - (x + width);
if (diff < 0)
width += diff;
diff = pwp->clirect.top - y;
if (diff > 0) {
height -= diff;
y = pwp->clirect.top;
}
diff = pwp->clirect.bottom - (y + height);
if (diff < 0)
height += diff;
}
/*
* If the window is completely clipped out of view, then
* set the clipping region to indicate that.
*/
if (width <= 0 || height <= 0) {
GdSetClipRegion(hdc->psd, NULL);
return;
}
/*
* Allocate initial vis region to parent-clipped size of window
*/
vis = GdAllocRectRegion(x, y, x+width, y+height);
/*
* Allocate temp region
*/
r = GdAllocRegion();
/*
* Now examine all windows that obscure this window, and
* for each obscuration, break up the clip rectangles into
* the smaller pieces that are still visible. The windows
* that can obscure us are the earlier siblings of all of
* our parents. When clipping the root window, search all children.
*/
pwp = wp;
while (pwp != NULL) {
wp = pwp;
pwp = wp->parent;
if(!pwp) {
/* We're clipping the root window*/
if(hdc->flags & DCX_CLIPCHILDREN)
/* start with root's children*/
sibwp = rootwp->children;
else sibwp = NULL; /* no search*/
wp = NULL; /* search all root's children*/
} else {
if(hdc->flags & DCX_CLIPSIBLINGS)
sibwp = pwp->children;
else sibwp = wp; /* no search*/
}
for (; sibwp != wp; sibwp = sibwp->siblings) {
if (sibwp->unmapcount)
continue;
GdSetRectRegionIndirect(r, &sibwp->winrect);
GdSubtractRegion(vis, vis, r);
}
/* if not clipping the root window, stop when you reach it*/
if(pwp == rootwp)
break;
}
/*
* If not the root window and we're going to be drawing
* in the client area, clip all children. This is
* required for non-special paint handling for child windows.
* Non-client dc's don't clip children in order to get
* proper border clipping in the case of border-clipped children.
*/
wp = hdc->hwnd;
if(wp != rootwp && MwIsClientDC(hdc)) {
for (sibwp=wp->children; sibwp; sibwp = sibwp->siblings) {
if (sibwp->unmapcount)
continue;
GdSetRectRegionIndirect(r, &sibwp->winrect);
GdSubtractRegion(vis, vis, r);
}
}
#if UPDATEREGIONS
/*
* Intersect with update region, unless requested not to.
*/
if(!(hdc->flags & DCX_EXCLUDEUPDATE))
GdIntersectRegion(vis, vis, wp->update);
#endif
/*
* Intersect with user region, if set.
*/
if (hdc->region)
GdIntersectRegion(vis, vis, hdc->region->rgn);
/*
* Set the clip region (later destroy handled by GdSetClipRegion)
*/
GdSetClipRegion(hdc->psd, vis);
/*
* Destroy temp region
*/
GdDestroyRegion(r);
}
/*
* Prepare to do drawing in a window or pixmap using the specified
* graphics context. Returns the drawable pointer if successful,
* and the type of drawing id that was supplied. Returns the special value
* GR_DRAW_TYPE_NONE if an error is generated, or if drawing is useless.
*/
GR_DRAW_TYPE
GsPrepareDrawing(GR_DRAW_ID id, GR_GC_ID gcid, GR_DRAWABLE **retdp)
{
GR_WINDOW *wp; /* found window */
GR_PIXMAP *pp; /* found pixmap */
GR_GC *gcp; /* found graphics context */
GR_REGION *regionp; /* user clipping region */
MWCLIPREGION*reg;
*retdp = NULL;
gcp = GsFindGC(gcid);
if (gcp == NULL)
return GR_DRAW_TYPE_NONE;
/*
* If the graphics context is not the current one, then
* make it the current one and remember to update it.
*/
if (gcp != curgcp) {
curgcp = gcp;
gcp->changed = GR_TRUE;
}
/*
* Look for window or pixmap id
*/
pp = NULL;
wp = GsFindWindow(id);
if (wp == NULL) {
pp = GsFindPixmap(id);
if (pp == NULL)
return GR_DRAW_TYPE_NONE;
havepixmap:
#if DYNAMICREGIONS
reg = GdAllocRectRegion(0, 0, pp->psd->xvirtres, pp->psd->yvirtres);
/* intersect with user region if any*/
if (gcp->regionid) {
regionp = GsFindRegion(gcp->regionid);
if (regionp) {
/* handle pixmap offsets*/
if (gcp->xoff || gcp->yoff) {
MWCLIPREGION *local = GdAllocRegion();
GdCopyRegion(local, regionp->rgn);
GdOffsetRegion(local, gcp->xoff, gcp->yoff);
GdIntersectRegion(reg, reg, local);
GdDestroyRegion(local);
} else
GdIntersectRegion(reg, reg, regionp->rgn);
}
}
GdSetClipRegion(pp->psd, reg);
#else
{
MWCLIPRECT cliprect;
/* FIXME: setup pixmap clipping, different from windows*/
cliprect.x = 0;
cliprect.y = 0;
cliprect.width = pp->psd->xvirtres;
cliprect.height = pp->psd->yvirtres;
GdSetClipRects(pp->psd, 1, &cliprect);
}
#endif
/* reset clip cache for next window draw*/
clipwp = NULL;
} else {
if (!wp->output) {
GsError(GR_ERROR_INPUT_ONLY_WINDOW, id);
return GR_DRAW_TYPE_NONE;
}
/* check if buffered window*/
if (wp->props & GR_WM_PROPS_BUFFERED) {
pp = wp->buffer;
wp = NULL;
goto havepixmap; /* draw into pixmap buffer*/
}
if (!wp->realized)
return GR_DRAW_TYPE_NONE;
/*
* If the window is not the currently clipped one,
* then make it the current one and define its clip rectangles.
*/
if (wp != clipwp || gcp->changed) {
#if DYNAMICREGIONS
/* find user region for intersect*/
regionp = gcp->regionid? GsFindRegion(gcp->regionid): NULL;
/* Special handling if user region is not at offset 0,0*/
if (regionp && (gcp->xoff || gcp->yoff)) {
MWCLIPREGION *local = GdAllocRegion();
GdCopyRegion(local, regionp->rgn);
GdOffsetRegion(local, gcp->xoff, gcp->yoff);
GsSetClipWindow(wp, local, gcp->mode & ~GR_MODE_DRAWMASK);
GdDestroyRegion(local);
} else
GsSetClipWindow(wp, regionp? regionp->rgn: NULL, gcp->mode & ~GR_MODE_DRAWMASK);
#else
GsSetClipWindow(wp, NULL, gcp->mode & ~GR_MODE_DRAWMASK);
#endif /* DYNAMICREGIONS*/
}
}
/*
* If the graphics context has been changed, then tell the
* device driver about it.
*/
if (gcp->changed) {
PSD psd = (wp ? wp->psd : pp->psd);
uint32_t mask;
int count;
if (gcp->linestyle == GR_LINE_SOLID) {
mask = 0;
count = 0;
} else {
mask = gcp->dashmask;
count = gcp->dashcount;
}
if (gcp->fgispixelval)
GdSetForegroundPixelVal(psd, gcp->foreground);
else
GdSetForegroundColor(psd, gcp->foreground);
if (gcp->bgispixelval)
GdSetBackgroundPixelVal(psd, gcp->background);
else
GdSetBackgroundColor(psd, gcp->background);
GdSetMode(gcp->mode & GR_MODE_DRAWMASK);
GdSetUseBackground(gcp->usebackground);
#if MW_FEATURE_SHAPES
GdSetDash(&mask, &count);
GdSetFillMode(gcp->fillmode);
GdSetTSOffset(gcp->ts_offset.x, gcp->ts_offset.y);
switch(gcp->fillmode) {
case GR_FILL_STIPPLE:
case GR_FILL_OPAQUE_STIPPLE:
GdSetStippleBitmap(gcp->stipple.bitmap, gcp->stipple.width, gcp->stipple.height);
break;
case GR_FILL_TILE:
GdSetTilePixmap(gcp->tile.psd, gcp->tile.width, gcp->tile.height);
break;
}
#endif
gcp->changed = GR_FALSE;
}
*retdp = wp? (GR_DRAWABLE *)wp: (GR_DRAWABLE *)pp;
return wp? GR_DRAW_TYPE_WINDOW: GR_DRAW_TYPE_PIXMAP;
}
/*
* Set the clip rectangles for a window taking into account other
* windows that may be obscuring it. The windows that may be obscuring
* this one are the siblings of each direct ancestor which are higher
* in priority than those ancestors. Also, each parent limits the visible
* area of the window. The clipping is not done if it is already up to
* date of if the window is not outputtable.
*/
void
GsSetClipWindow(GR_WINDOW *wp, MWCLIPREGION *userregion, int flags)
{
GR_WINDOW *orgwp; /* original window pointer */
GR_WINDOW *pwp; /* parent window */
GR_WINDOW *sibwp; /* sibling windows */
GR_COORD minx; /* minimum clip x coordinate */
GR_COORD miny; /* minimum clip y coordinate */
GR_COORD maxx; /* maximum clip x coordinate */
GR_COORD maxy; /* maximum clip y coordinate */
GR_COORD diff; /* difference in coordinates */
GR_SIZE bs; /* border size */
GR_COORD x, y, width, height;
MWCLIPREGION *vis, *r;
if (wp->unmapcount || !wp->output)
return;
clipwp = wp;
/*
* Start with the rectangle for the complete window.
* We will then cut pieces out of it as needed.
*/
x = wp->x;
y = wp->y;
width = wp->width;
height = wp->height;
/*
* First walk upwards through all parent windows,
* and restrict the visible part of this window to the part
* that shows through all of those parent windows.
*/
pwp = wp;
while (pwp != rootwp) {
pwp = pwp->parent;
diff = pwp->x - x;
if (diff > 0) {
width -= diff;
x = pwp->x;
}
diff = (pwp->x + pwp->width) - (x + width);
if (diff < 0)
width += diff;
diff = pwp->y - y;
if (diff > 0) {
height -= diff;
y = pwp->y;
}
diff = (pwp->y + pwp->height) - (y + height);
if (diff < 0)
height += diff;
}
/*
* If the window is completely clipped out of view, then
* set the clipping region to indicate that.
*/
if (width <= 0 || height <= 0) {
GdSetClipRegion(clipwp->psd, NULL);
return;
}
/*
* Allocate region to clipped size of window
*/
vis = GdAllocRectRegion(x, y, x+width, y+height);
/*
* Allocate temp region
*/
r = GdAllocRegion();
/*
* Now examine all windows that obscure this window, and
* for each obscuration, break up the clip rectangles into
* the smaller pieces that are still visible. The windows
* that can obscure us are the earlier siblings of all of
* our parents.
*/
orgwp = wp;
pwp = wp;
while (pwp != NULL) {
wp = pwp;
pwp = wp->parent;
if(!pwp) {
/* We're clipping the root window*/
if (!(flags & GR_MODE_EXCLUDECHILDREN))
/* start with root's children*/
sibwp = rootwp->children;
else sibwp = NULL; /* no search*/
wp = NULL; /* search all root's children*/
} else {
sibwp = pwp->children; /* clip siblings*/
}
for (; sibwp != wp; sibwp = sibwp->siblings) {
if (sibwp->unmapcount || !sibwp->output)
continue;
bs = sibwp->bordersize;
minx = sibwp->x - bs;
miny = sibwp->y - bs;
maxx = sibwp->x + sibwp->width + bs;
maxy = sibwp->y + sibwp->height + bs;
GdSetRectRegion(r, minx, miny, maxx, maxy);
GdSubtractRegion(vis, vis, r);
}
/* if not clipping the root window, stop when you reach it*/
if (pwp == rootwp)
break;
}
wp = orgwp;
/*
* If not the root window, clip all children.
* (Root window's children are are clipped above)
*/
if(wp != rootwp && !(flags & GR_MODE_EXCLUDECHILDREN)) {
for (sibwp=wp->children; sibwp; sibwp = sibwp->siblings) {
if (sibwp->unmapcount || !sibwp->output)
continue;
bs = sibwp->bordersize;
minx = sibwp->x - bs;
miny = sibwp->y - bs;
maxx = sibwp->x + sibwp->width + bs;
maxy = sibwp->y + sibwp->height + bs;
GdSetRectRegion(r, minx, miny, maxx, maxy);
GdSubtractRegion(vis, vis, r);
}
}
/*
* Intersect with user region, if set.
*/
if (userregion) {
/* temporarily offset region by window coordinates*/
GdOffsetRegion(userregion, wp->x, wp->y);
GdIntersectRegion(vis, vis, userregion);
GdOffsetRegion(userregion, -wp->x, -wp->y);
}
/*
* Set the clip region (later destroy handled by GdSetClipRegion)
*/
GdSetClipRegion(clipwp->psd, vis);
/*
* Destroy temp region
*/
GdDestroyRegion(r);
}
