BOOL WINAPI
StretchBlt(HDC hdcDest, int nXOriginDest, int nYOriginDest, int nWidthDest,
int nHeightDest, HDC hdcSrc, int nXOriginSrc, int nYOriginSrc,
int nWidthSrc, int nHeightSrc, DWORD dwRop)
{
HWND hwnd;
POINT dst, src;
if(!hdcDest || !hdcSrc)
return FALSE;
dst.x = nXOriginDest;
dst.y = nYOriginDest;
src.x = nXOriginSrc;
src.y = nYOriginSrc;
/* if src screen DC, convert coords*/
/* FIXME: src clipping isn't checked, only one set of cliprects also*/
if(!MwIsMemDC(hdcSrc) && MwIsClientDC(hdcSrc)) {
if(!(hwnd = MwPrepareDC(hdcSrc)))
return FALSE;
ClientToScreen(hwnd, &src);
}
/* if dst screen DC, convert coords and set clipping*/
/* FIXME: if dest is also screen, src clipping will be overwritten*/
if(!MwIsMemDC(hdcDest) && MwIsClientDC(hdcDest)) {
if(!(hwnd = MwPrepareDC(hdcDest)))
return FALSE;
ClientToScreen(hwnd, &dst);
}
if (nWidthDest == nWidthSrc && nHeightDest == nHeightSrc) {
GdBlit(hdcDest->psd, dst.x, dst.y, nWidthDest, nHeightDest,
hdcSrc->psd, src.x, src.y, dwRop);
} else {
GdStretchBlit(hdcDest->psd, dst.x, dst.y,
nWidthDest, nHeightDest, hdcSrc->psd, src.x, src.y,
nWidthSrc, nHeightSrc, dwRop);
}
return TRUE;
}
/*
* Draw a tiled pixmap window background.
*/
void
GsWpTileBackgroundPixmap(GR_WINDOW *wp, GR_PIXMAP *pm, GR_COORD x, GR_COORD y,
GR_SIZE width, GR_SIZE height)
{
GR_COORD tilex = 0, tiley = 0, fromx, fromy, cx, cy;
GR_SIZE destwidth, destheight, pmwidth, pmheight, cwidth, cheight;
if(pm->width > wp->width) pmwidth = wp->width;
else pmwidth = pm->width;
if(pm->height > wp->height) pmheight = wp->height;
else pmheight = pm->height;
for(;tiley < wp->height; tiley += pmheight, tilex = 0) {
if(tiley > (y + height)) continue;
if(y > (tiley + pmheight)) continue;
if((tiley + pmheight) > wp->height)
destheight = wp->height - tiley;
else destheight = pmheight;
for(;tilex < wp->width; tilex += pmwidth) {
if(tilex > (x + width)) continue;
if(x > (tilex + pmwidth)) continue;
if((tilex + pmwidth) > wp->width)
destwidth = wp->width - tilex;
else destwidth = pmwidth;
if((tilex >= x) && ((tilex + destwidth)<=(x + width))) {
fromx = 0;
cx = tilex + wp->x;
cwidth = destwidth;
} else {
if(x > tilex) {
fromx = x - tilex;
cwidth = destwidth - fromx;
} else {
fromx = 0;
cwidth = x + width - tilex;
}
if(cwidth > width) cwidth = width;
if(cwidth > destwidth) cwidth = destwidth;
cx = wp->x + tilex + fromx;
}
if((tiley >= y)&&((tiley + destheight)<=(y + height))) {
fromy = 0;
cy = tiley + wp->y;
cheight = destheight;
} else {
if(y > tiley) {
fromy = y - tiley;
cheight = destheight - fromy;
} else {
fromy = 0;
cheight = y + height - tiley;
}
if(cwidth > width) cwidth = width;
if(cheight > destheight) cheight = destheight;
cy = wp->y + tiley + fromy;
}
if((cwidth > 0) && (cheight > 0)) {
GdBlit(wp->psd, cx, cy, cwidth, cheight,
pm->psd, fromx, fromy, MWROP_COPY);
}
}
}
}
/*
* Draw a window's background pixmap.
*
* The flags mean:
* GR_BACKGROUND_TILE- tile the pixmap across the window (default).
* GR_BACKGROUND_TOPLEFT- draw the pixmap at (0,0) relative to the window.
* GR_BACKGROUND_CENTER- draw the pixmap in the middle of the window.
* GR_BACKGROUND_STRETCH- stretch the pixmap within the window.
* GR_BACKGROUND_TRANS- if the pixmap is smaller than the window and not
* using tile mode, there will be gaps around the pixmap. This flag causes
* to not fill in the spaces with the background colour.
*/
void GsWpDrawBackgroundPixmap(GR_WINDOW *wp, GR_PIXMAP *pm, GR_COORD x,
GR_COORD y, GR_SIZE width, GR_SIZE height)
{
GR_SIZE destwidth, destheight, fillwidth, fillheight, pmwidth, pmheight;
GR_COORD fromx, fromy, destx, desty, pixmapx = 0, pixmapy = 0;
if(wp->bgpixmapflags & (GR_BACKGROUND_TOPLEFT|GR_BACKGROUND_STRETCH)) {
pixmapx = 0;
pixmapy = 0;
} else if(wp->bgpixmapflags & GR_BACKGROUND_CENTER) {
if(pm->width >= wp->width) pixmapx = 0;
else pixmapx = (wp->width - pm->width) / 2;
if(pm->height >= wp->height) pixmapy = 0;
else pixmapy = (wp->height - pm->height) / 2;
} else {
/* GR_BACKGROUND_TILE (default)*/
GsWpTileBackgroundPixmap(wp, pm, x, y, width, height);
return;
}
if(pm->width > wp->width) pmwidth = wp->width;
else pmwidth = pm->width;
if(pm->height > wp->height) pmheight = wp->height;
else pmheight = pm->height;
if(x > pixmapx) {
destx = x;
fromx = x - pixmapx;
destwidth = pixmapx + pmwidth - x;
} else {
destx = pixmapx;
fromx = 0;
destwidth = x + width - pixmapx;
}
if(y > pixmapy) {
desty = y;
fromy = y - pixmapy;
destheight = pixmapy + pmheight - desty;
} else {
desty = pixmapy;
fromy = 0;
destheight = y + height - pixmapy;
}
if(destwidth > 0 && destheight > 0) {
if (wp->bgpixmapflags & GR_BACKGROUND_STRETCH) {
GdStretchBlit(wp->psd, destx + wp->x, desty + wp->y,
destwidth, destheight, pm->psd, fromx, fromy,
pm->width, pm->height, MWROP_COPY);
} else GdBlit(wp->psd, destx + wp->x, desty + wp->y, destwidth,
destheight, pm->psd, fromx, fromy, MWROP_COPY);
}
if(wp->bgpixmapflags & (GR_BACKGROUND_TRANS|GR_BACKGROUND_STRETCH))
return;
/* Fill in the gaps around the pixmap */
if(x < pixmapx) {
fillwidth = pixmapx - x;
if(fillwidth > width) fillwidth = width;
fillheight = height;
GdFillRect(wp->psd, wp->x + x, wp->y + y, fillwidth,fillheight);
}
if((x + width) > (pixmapx + pmwidth)) {
fillwidth = (x + width) - (pixmapx + pmwidth);
if(fillwidth > width) fillwidth = width;
fillheight = height;
if(x < (pixmapx + pmwidth)) destx = pixmapx + pmwidth + wp->x;
else destx = x + wp->x;
GdFillRect(wp->psd, destx, wp->y + y, fillwidth, fillheight);
}
if(y < pixmapy) {
fillheight = pixmapy - y;
if(fillheight > height) fillheight = height;
if(x < pixmapx) destx = pixmapx + wp->x;
else destx = x + wp->x;
if((x + width) > (pixmapx + pmwidth))
fillwidth = pixmapx + pmwidth - destx;
else fillwidth = x + width - destx;
if((fillwidth > 0) && (fillheight > 0)) {
GdFillRect(wp->psd, destx, wp->y + y, fillwidth,
fillheight);
}
}
if((y + height) > (pixmapy + pmheight)) {
fillheight = (y + height) - (pixmapy + pmheight);
if(fillheight > height) fillheight = height;
if(x < pixmapx) destx = pixmapx + wp->x;
else destx = x + wp->x;
if(y < (pixmapy + pmheight)) desty = pixmapy + pmheight + wp->y;
else desty = y + wp->y;
if((x + width) > (pixmapx + pmwidth))
fillwidth = pixmapx + pmwidth - destx;
else fillwidth = x + width - destx;
if((fillwidth > 0) && (fillheight > 0)) {
GdFillRect(wp->psd, destx, desty, fillwidth,fillheight);
}
}
}
/*
* Clear the specified area of a window and possibly make an exposure event.
* This sets the area window to its background color or pixmap. If the
* exposeflag is 1, then this also creates an exposure event for the window.
* For buffered windows, mark drawing finalized and draw if
* exposeflag = 2.
*/
void
GsClearWindow(GR_WINDOW *wp, GR_COORD x, GR_COORD y, GR_SIZE width, GR_SIZE height, int exposeflag)
{
if (!wp->realized || !wp->output)
return;
/*
* Reduce the arguments so that they actually lie within the window.
*/
if (x < 0) {
width += x;
x = 0;
}
if (y < 0) {
height += y;
y = 0;
}
if (x + width > wp->width)
width = wp->width - x;
if (y + height > wp->height)
height = wp->height - y;
/*
* Now see if the region is really in the window. If not, then
* do nothing.
*/
if (x >= wp->width || y >= wp->height || width <= 0 || height <= 0)
return;
/*
* Buffered window drawing. First check if drawing finalized and
* set flag. Physical window background erase is never performed
* with buffered windows, all drawing is postponed until the application
* is finished by calling GrClearWindow(..., 2), ie. GrFlushWindow()
*/
if (exposeflag == 2)
wp->props |= GR_WM_PROPS_DRAWING_DONE;
if (wp->props & GR_WM_PROPS_BUFFERED) {
/* nothing to do until drawing finalized*/
if (!(wp->props & GR_WM_PROPS_DRAWING_DONE))
return;
/* prepare clipping to window boundaries*/
GsSetClipWindow(wp, NULL, 0);
clipwp = NULL; /* reset clip cache since no user regions used*/
#if DEBUG_EXPOSE
curgcp = NULL;
GdSetFillMode(GR_FILL_SOLID);
GdSetMode(GR_MODE_COPY);
GdSetForegroundColor(wp->psd, MWRGB(255,255,0)); /* yellow*/
GdFillRect(wp->psd, wp->x+x, wp->y+y, width, height);
usleep(500000);
#endif
/* copy window pixmap buffer to window*/
GdBlit(wp->psd, wp->x + x, wp->y + y, width, height, wp->buffer->psd, x, y, MWROP_COPY);
return; /* don't deliver exposure events*/
}
/*
* Unbuffered window: erase background unless nobackground flag set
*/
if (!(wp->props & GR_WM_PROPS_NOBACKGROUND)) {
/* perhaps find a better way of determining whether pixmap needs src_over*/
int hasalpha = wp->bgpixmap && (wp->bgpixmap->psd->data_format & MWIF_HASALPHA);
/*
* Draw the background of the window.
* Invalidate the current graphics context since
* we are changing the foreground color and mode.
*/
GsSetClipWindow(wp, NULL, 0);
clipwp = NULL; /* reset clip cache since no user regions used*/
#if DEBUG_EXPOSE
GdSetFillMode(GR_FILL_SOLID);
GdSetMode(GR_MODE_COPY);
GdSetForegroundColor(wp->psd, MWRGB(255,255,0)); /* yellow*/
GdFillRect(wp->psd, wp->x+x, wp->y+y, width, height);
usleep(500000);
#endif
curgcp = NULL;
GdSetFillMode(GR_FILL_SOLID);
GdSetMode(GR_MODE_COPY);
GdSetForegroundColor(wp->psd, wp->background);
/* if background pixmap w/alpha channel and stretchblit, fill entire (clipped) window*/
if (hasalpha && wp->bgpixmapflags == GR_BACKGROUND_STRETCH)
GdFillRect(wp->psd, wp->x, wp->y, wp->width, wp->height);
else /* if no pixmap background clear exposed area*/
if (!wp->bgpixmap || hasalpha) /* FIXME will flash with pixmap, should check src_over*/
if (!(wp->bgpixmapflags & GR_BACKGROUND_TRANS))
GdFillRect(wp->psd, wp->x + x, wp->y + y, width, height);
if (wp->bgpixmap)
GsDrawBackgroundPixmap(wp, wp->bgpixmap, x, y, width, height);
}
/*
* Do the exposure if required for unbuffered windows.
*/
if (exposeflag)
GsDeliverExposureEvent(wp, x, y, width, height);
}
/*
* Draw a window's background pixmap.
*
* The flags mean:
* GR_BACKGROUND_TILE- tile the pixmap across the window (default).
* GR_BACKGROUND_TOPLEFT- draw the pixmap at (0,0) relative to the window.
* GR_BACKGROUND_CENTER- draw the pixmap in the middle of the window.
* GR_BACKGROUND_STRETCH- stretch the pixmap within the window.
* GR_BACKGROUND_TRANS- if the pixmap is smaller than the window and not
* using tile mode, there will be gaps around the pixmap. This flag causes
* to not fill in the spaces with the background colour.
*/
void
GsDrawBackgroundPixmap(GR_WINDOW *wp, GR_PIXMAP *pm, GR_COORD x,
GR_COORD y, GR_SIZE width, GR_SIZE height)
{
GR_SIZE destwidth, destheight, fillwidth, fillheight, pmwidth, pmheight;
GR_COORD fromx, fromy, destx, desty, pixmapx = 0, pixmapy = 0;
if(wp->bgpixmapflags & GR_BACKGROUND_STRETCH) {
/* must use whole window coords or stretch will have incorrect ratios*/
GdStretchBlit(wp->psd, wp->x, wp->y, wp->x + wp->width, wp->y + wp->height,
pm->psd, 0, 0, pm->width - 1, pm->height - 1, MWROP_SRC_OVER);
return;
}
if(wp->bgpixmapflags == GR_BACKGROUND_TILE) {
GsTileBackgroundPixmap(wp, pm, x, y, width, height);
return;
}
if(wp->bgpixmapflags & GR_BACKGROUND_CENTER) {
if (pm->width < wp->width) pixmapx = (wp->width - pm->width) / 2;
if (pm->height < wp->height) pixmapy = (wp->height - pm->height) / 2;
}
/* topleft & center calcs*/
pmwidth = MWMIN(pm->width, wp->width);
pmheight = MWMIN(pm->height, wp->height);
if(x > pixmapx) {
destx = x;
fromx = x - pixmapx;
destwidth = pixmapx + pmwidth - x;
} else {
destx = pixmapx;
fromx = 0;
destwidth = x + width - pixmapx;
}
if(y > pixmapy) {
desty = y;
fromy = y - pixmapy;
destheight = pixmapy + pmheight - desty;
} else {
desty = pixmapy;
fromy = 0;
destheight = y + height - pixmapy;
}
if(destwidth > 0 && destheight > 0) {
destwidth = MWMIN(width, destwidth);
destheight = MWMIN(height, destheight);
GdBlit(wp->psd, wp->x + destx, wp->y + desty, destwidth, destheight,
pm->psd, fromx, fromy, MWROP_SRC_OVER);
}
if(wp->bgpixmapflags & GR_BACKGROUND_TRANS)
return;
/* Fill in the gaps around the pixmap */
if(x < pixmapx) {
fillwidth = pixmapx - x;
if(fillwidth > width) fillwidth = width;
fillheight = height;
GdFillRect(wp->psd, wp->x + x, wp->y + y, fillwidth, fillheight);
}
if(x + width > pixmapx + pmwidth) {
fillwidth = (x + width) - (pixmapx + pmwidth);
if(fillwidth > width) fillwidth = width;
fillheight = height;
if(x < pixmapx + pmwidth)
destx = pixmapx + pmwidth + wp->x;
else destx = x + wp->x;
GdFillRect(wp->psd, destx, wp->y + y, fillwidth, fillheight);
}
if(y < pixmapy) {
fillheight = pixmapy - y;
if(fillheight > height) fillheight = height;
if(x < pixmapx)
destx = pixmapx + wp->x;
else destx = x + wp->x;
if(x + width > pixmapx + pmwidth)
fillwidth = pixmapx + pmwidth - destx;
else fillwidth = x + width - destx;
if(fillwidth > 0 && fillheight > 0)
GdFillRect(wp->psd, destx, wp->y + y, fillwidth, fillheight);
}
if(y + height > pixmapy + pmheight) {
fillheight = (y + height) - (pixmapy + pmheight);
if(fillheight > height) fillheight = height;
if(x < pixmapx)
destx = pixmapx + wp->x;
else destx = x + wp->x;
if(y < pixmapy + pmheight)
desty = pixmapy + pmheight + wp->y;
else desty = y + wp->y;
if(x + width > pixmapx + pmwidth)
fillwidth = pixmapx + pmwidth - destx;
else fillwidth = x + width - destx;
if(fillwidth > 0 && fillheight > 0)
GdFillRect(wp->psd, destx, desty, fillwidth, fillheight);
}
}
