/*
* 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 nonzero, then this also creates an exposure event for the
* window.
*/
void
GsWpClearWindow(GR_WINDOW *wp, GR_COORD x, GR_COORD y, GR_SIZE width,
GR_SIZE height, GR_BOOL 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;
/*
* Draw the background of the window.
* Invalidate the current graphics context since
* we are changing the foreground color and mode.
*/
GsSetClipWindow(wp, NULL, 0);
curgcp = NULL;
GdSetFillMode(GR_FILL_SOLID);
if (!(wp->props & GR_WM_PROPS_NOBACKGROUND)) {
GdSetMode(GR_MODE_COPY);
GdSetForegroundColor(wp->psd, wp->background);
if (wp->bgpixmap) {
GsWpDrawBackgroundPixmap(wp, wp->bgpixmap, x, y,
width, height);
} else {
GdFillRect(wp->psd, wp->x + x, wp->y + y, width,height);
}
}
/*
* Now do the exposure if required.
*/
if (exposeflag)
GsDeliverExposureEvent(wp, x, y, width, height);
}
/*
* 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);
}
