setclip.c

来自「Nxlib,一个模拟xlib的程序。使用microwindows的库来运行需要x」· C语言 代码 · 共 60 行

#include "nxlib.h"
#include <stdlib.h>

int
XSetClipOrigin(Display *display, GC gc, int clip_x_origin, int clip_y_origin)
{
	GrSetGCClipOrigin(gc->gid, clip_x_origin, clip_y_origin);
	return 1;
}

int
XSetClipMask(Display *display, GC gc, Pixmap mask)
{
	GR_REGION_ID	r;
	GR_WINDOW_INFO	info;

	if (mask == None) {
		GrSetGCRegion(gc->gid, 0);
		return 1;
	}

printf("XSetClipMask %d\n", mask);
	GrGetWindowInfo(mask, &info);
	r = GrNewRegionFromPixmap(mask, 0, 0, info.width, info.height);
	GrSetGCRegion(gc->gid, r);

	/*GrDestroyRegion(r);*/	/* FIXME: LEAK: can't destroy region here...*/
	return 1;
}

int
XSetClipRectangles(Display *display, GC gc, int clip_x_origin, int clip_y_origin,
	XRectangle *rectangles, int n, int ordering)
{
	GR_REGION_ID	r;

	GrSetGCClipOrigin(gc->gid, clip_x_origin, clip_y_origin);

	if (n == 0) {
		/* FIXME need to disable all output here...*/
		printf("XSetClipRectangles called with n=0\n");
		return 1;
	}

	r = GrNewRegion();
	while (--n >= 0) {
		GR_RECT rc;

		rc.x = rectangles->x;
		rc.y = rectangles->y;
		rc.width = rectangles->width;
		rc.height = rectangles->height;
		GrUnionRectWithRegion(r, &rc);
		++rectangles;
	}
	GrSetGCRegion(gc->gid, r);
	/*GrDestroyRegion(r);*/	/* FIXME: LEAK: can't destroy region here...*/
	return 1;
}