179 lines
5.3 KiB
C
179 lines
5.3 KiB
C
/*
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* X11DRV clipping functions
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*
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* Copyright 1998 Huw Davies
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*/
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#include "config.h"
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#include "ts_xlib.h"
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#include <stdio.h>
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#include "gdi.h"
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#include "x11drv.h"
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#include "region.h"
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#include "debugtools.h"
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DEFAULT_DEBUG_CHANNEL(x11drv);
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/***********************************************************************
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* X11DRV_SetDeviceClipping
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* Copy RECT32s to a temporary buffer of XRectangles and call
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* TSXSetClipRectangles().
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*
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* Could write using GetRegionData but this would be slower.
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*/
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void X11DRV_SetDeviceClipping( DC * dc )
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{
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XRectangle *pXrect;
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X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
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RGNOBJ *obj = (RGNOBJ *) GDI_GetObjPtr(dc->hGCClipRgn, REGION_MAGIC);
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if (!obj)
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{
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ERR("Rgn is 0. Please report this.\n");
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return;
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}
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if (obj->rgn->numRects > 0)
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{
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XRectangle *pXr;
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RECT *pRect = obj->rgn->rects;
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RECT *pEndRect = obj->rgn->rects + obj->rgn->numRects;
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pXrect = HeapAlloc( GetProcessHeap(), 0,
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sizeof(*pXrect) * obj->rgn->numRects );
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if(!pXrect)
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{
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WARN("Can't alloc buffer\n");
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GDI_ReleaseObj( dc->hGCClipRgn );
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return;
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}
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for(pXr = pXrect; pRect < pEndRect; pRect++, pXr++)
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{
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pXr->x = pRect->left;
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pXr->y = pRect->top;
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pXr->width = pRect->right - pRect->left;
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pXr->height = pRect->bottom - pRect->top;
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}
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}
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else
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pXrect = NULL;
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TSXSetClipRectangles( gdi_display, physDev->gc, 0, 0,
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pXrect, obj->rgn->numRects, YXBanded );
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if(pXrect)
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HeapFree( GetProcessHeap(), 0, pXrect );
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GDI_ReleaseObj( dc->hGCClipRgn );
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}
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/***********************************************************************
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* X11DRV_SetDrawable
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*
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* Set the drawable, clipping mode and origin for a DC.
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*/
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void X11DRV_SetDrawable( HDC hdc, Drawable drawable, int mode, int org_x, int org_y )
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{
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DC *dc = DC_GetDCPtr( hdc );
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if (dc)
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{
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X11DRV_PDEVICE *physDev = dc->physDev;
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/*
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* This function change the coordinate system (DCOrgX,DCOrgY)
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* values. When it moves the origin, other data like the current clipping
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* region will not be moved to that new origin. In the case of DCs that are class
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* or window DCs that clipping region might be a valid value from a previous use
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* of the DC and changing the origin of the DC without moving the clip region
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* results in a clip region that is not placed properly in the DC.
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* This code will save the dc origin, let the SetDrawable
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* modify the origin and reset the clipping. When the clipping is set,
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* it is moved according to the new DC origin.
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*/
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if (dc->hClipRgn) OffsetRgn( dc->hClipRgn, org_x - dc->DCOrgX, org_y - dc->DCOrgY );
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dc->DCOrgX = org_x;
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dc->DCOrgY = org_y;
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physDev->drawable = drawable;
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TSXSetSubwindowMode( gdi_display, physDev->gc, mode );
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GDI_ReleaseObj( hdc );
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}
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}
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/***********************************************************************
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* X11DRV_StartGraphicsExposures
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*
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* Set the DC in graphics exposures mode
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*/
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void X11DRV_StartGraphicsExposures( HDC hdc )
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{
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DC *dc = DC_GetDCPtr( hdc );
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if (dc)
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{
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X11DRV_PDEVICE *physDev = dc->physDev;
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TSXSetGraphicsExposures( gdi_display, physDev->gc, True );
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physDev->exposures = 0;
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GDI_ReleaseObj( hdc );
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}
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}
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/***********************************************************************
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* X11DRV_EndGraphicsExposures
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*
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* End the graphics exposures mode and process the events
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*/
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void X11DRV_EndGraphicsExposures( HDC hdc, HRGN hrgn )
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{
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HRGN tmp = 0;
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DC *dc = DC_GetDCPtr( hdc );
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if (dc)
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{
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XEvent event;
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X11DRV_PDEVICE *physDev = dc->physDev;
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SetRectRgn( hrgn, 0, 0, 0, 0 );
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wine_tsx11_lock();
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XSetGraphicsExposures( gdi_display, physDev->gc, False );
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if (physDev->exposures)
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{
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XSync( gdi_display, False );
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for (;;)
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{
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XWindowEvent( gdi_display, physDev->drawable, ~0, &event );
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if (event.type == NoExpose) break;
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if (event.type == GraphicsExpose)
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{
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int x = event.xgraphicsexpose.x - dc->DCOrgX;
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int y = event.xgraphicsexpose.y - dc->DCOrgY;
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TRACE( "got %d,%d %dx%d count %d\n",
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x, y, event.xgraphicsexpose.width, event.xgraphicsexpose.height,
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event.xgraphicsexpose.count );
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if (!tmp) tmp = CreateRectRgn( 0, 0, 0, 0 );
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SetRectRgn( tmp, x, y,
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x + event.xgraphicsexpose.width,
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y + event.xgraphicsexpose.height );
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CombineRgn( hrgn, hrgn, tmp, RGN_OR );
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if (!event.xgraphicsexpose.count) break;
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}
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else
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{
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ERR( "got unexpected event %d\n", event.type );
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break;
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}
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if (tmp) DeleteObject( tmp );
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}
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}
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wine_tsx11_unlock();
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GDI_ReleaseObj( hdc );
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}
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}
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