static void iMatrixDrawSetCellClipping(Ihandle* ih, int x1, int x2, int y1, int y2)
{
int old_clip = cdCanvasClip(ih->data->cddbuffer, CD_QUERY);
if (old_clip == CD_CLIPAREA)
{
cdCanvasGetClipArea(ih->data->cddbuffer, &(ih->data->clip_x1), &(ih->data->clip_x2), &(ih->data->clip_y1), &(ih->data->clip_y2));
y1 = iupMATRIX_INVERTYAXIS(ih, y1);
y2 = iupMATRIX_INVERTYAXIS(ih, y2);
if (x1 > x2) {
int tmp = x1;
x1 = x2;
x2 = tmp;
}
if (y1 > y2) {
int tmp = y1;
y1 = y2;
y2 = tmp;
}
if (x1 < ih->data->clip_x1) x1 = ih->data->clip_x1;
if (x2 > ih->data->clip_x2) x2 = ih->data->clip_x2;
if (y1 < ih->data->clip_y1) y1 = ih->data->clip_y1;
if (y2 > ih->data->clip_y2) y2 = ih->data->clip_y2;
cdCanvasClipArea(ih->data->cddbuffer, x1, x2, y1, y2);
cdCanvasClip(ih->data->cddbuffer, CD_CLIPAREA);
}
}
int wdCanvasGetClipArea(cdCanvas* canvas, double *xmin, double *xmax, double *ymin, double *ymax)
{
int xminr, xmaxr, yminr, ymaxr;
int clip = cdCanvasGetClipArea(canvas, &xminr, &xmaxr, &yminr, &ymaxr);
_wCanvas2World(canvas, xminr, yminr, *xmin, *ymin);
_wCanvas2World(canvas, xmaxr, ymaxr, *xmax, *ymax);
return clip;
}
int wdCanvasGetClipArea(cdCanvas* canvas, double *xmin, double *xmax, double *ymin, double *ymax)
{
int xminr, xmaxr, yminr, ymaxr, clip;
assert(canvas);
if (!_cdCheckCanvas(canvas)) return CD_ERROR;
clip = cdCanvasGetClipArea(canvas, &xminr, &xmaxr, &yminr, &ymaxr);
_wCanvas2World(canvas, xminr, yminr, *xmin, *ymin);
_wCanvas2World(canvas, xmaxr, ymaxr, *xmax, *ymax);
return clip;
}
/* Function used to call the client; is used when a cell must be repainted. */
static void iCellsCallDrawCb(Ihandle* ih, int xmin, int xmax, int ymin, int ymax, int i, int j)
{
int oldxmin, oldxmax, oldymin, oldymax, oldclip;
int w = ih->data->w;
int h = ih->data->h;
IFniiiiiiC draw_cb;
cdCanvas* old_cnv = cdActiveCanvas();
/* Getting clipping area for post restore */
oldclip = cdCanvasClip(ih->data->cd_canvas, CD_QUERY);
cdCanvasGetClipArea(ih->data->cd_canvas, &oldxmin, &oldxmax, &oldymin, &oldymax);
if (ih->data->clipped) /* Clipping the cell area */
{
int cxmin, cxmax, cymin, cymax;
cdCanvasClip(ih->data->cd_canvas, CD_CLIPAREA);
cxmin = xmin < 0 ? 0 : xmin;
cymin = ymin < 0 ? 0 : ymin;
cxmax = xmax > w ? w : xmax;
cymax = ymax > h ? h : ymax;
cdCanvasClipArea(ih->data->cd_canvas, cxmin, cxmax, cymin, cymax);
}
draw_cb = (IFniiiiiiC)IupGetCallback(ih, "DRAW_CB");
if (draw_cb)
{
if (old_cnv != ih->data->cd_canvas) /* backward compatibility code */
cdActivate(ih->data->cd_canvas);
draw_cb(ih, i, j, xmin, xmax, ymin, ymax, ih->data->cd_canvas);
if (old_cnv && old_cnv != ih->data->cd_canvas)
{
cdActivate(old_cnv);
cdCanvasActivate(ih->data->cd_canvas);
}
}
cdCanvasClip(ih->data->cd_canvas, oldclip);
cdCanvasClipArea(ih->data->cd_canvas, oldxmin, oldxmax, oldymin, oldymax);
}
/**
* Function used to call the client; is used when a cell must be repainted.
*/
static void call_apl_draw(TCells* obj, int xmin, int xmax,
int ymin, int ymax, int i, int j) {
int cxmin, cxmax, cymin, cymax;
int oldxmin, oldxmax, oldymin, oldymax;
int w = obj->width;
int h = obj->height;
/* Getting clipping area for post restore */
int oldclip = cdCanvasClip(obj->cddbuffer,CD_QUERY);
cdCanvasGetClipArea(obj->cddbuffer,&oldxmin, &oldxmax, &oldymin, &oldymax);
/* Clipoing the cell area */
if (obj->clipped) {
cdCanvasClip(obj->cddbuffer, CD_CLIPAREA);
cxmin = xmin < 0 ? 0 : xmin;
cymin = ymin < 0 ? 0 : ymin;
cxmax = xmax > w ? w : xmax;
cymax = ymax > h ? h : ymax;
cdCanvasClipArea(obj->cddbuffer, xmin, xmax, ymin, ymax);
}
/* Calling the application draw callback. */
{
TDrawCb func = (TDrawCb)IupGetCallback(obj->self, IUP_DRAW_CB);
if (func)
{
cdCanvas* old_cnv = cdActiveCanvas();
if (old_cnv != obj->cddbuffer) /* backward compatibility code */
cdActivate(obj->cddbuffer);
func(obj->self, i, j, xmin, xmax, ymin, ymax, obj->cddbuffer);
if (old_cnv != obj->cddbuffer)
cdActivate(old_cnv);
}
}
/* Restoring clipping attributes */
cdCanvasClip(obj->cddbuffer,oldclip);
cdCanvasClipArea(obj->cddbuffer, oldxmin, oldxmax, oldymin, oldymax);
}
