C++ (Cpp) fz_blend_pixmap Examples

Example #1

File: draw_device.c Project: DeepGopani/mupdf

static void fz_knockout_end(fz_context *ctx, void *user)
{
	fz_draw_device *dev = user;
	fz_pixmap *group = dev->dest;
	fz_pixmap *shape = dev->shape;
	int blendmode;
	int isolated;

	if ((dev->blendmode & FZ_BLEND_KNOCKOUT) == 0)
		return;

	if (dev->top == dev->stack_max)
		fz_grow_stack(dev);

	if (dev->top > 0)
	{
		dev->top--;
		blendmode = dev->blendmode & FZ_BLEND_MODEMASK;
		isolated = dev->blendmode & FZ_BLEND_ISOLATED;
		dev->blendmode = dev->stack[dev->top].blendmode;
		dev->shape = dev->stack[dev->top].shape;
		dev->dest = dev->stack[dev->top].dest;
		dev->scissor = dev->stack[dev->top].scissor;

#ifdef DUMP_GROUP_BLENDS
		dump_spaces(dev->top, "");
		fz_dump_blend(group, "Blending ");
		if (shape)
			fz_dump_blend(shape, "/");
		fz_dump_blend(dev->dest, " onto ");
		if (dev->shape)
			fz_dump_blend(dev->shape, "/");
		if (blendmode != 0)
			printf(" (blend %d)", blendmode);
		if (isolated != 0)
			printf(" (isolated)");
		printf(" (knockout)");
#endif
		if ((blendmode == 0) && (shape == NULL))
			fz_paint_pixmap(dev->dest, group, 255);
		else
			fz_blend_pixmap(dev->dest, group, 255, blendmode, isolated, shape);

		fz_drop_pixmap(ctx, group);
		if (shape != dev->shape)
		{
			if (dev->shape)
			{
				fz_paint_pixmap(dev->shape, shape, 255);
			}
			fz_drop_pixmap(ctx, shape);
		}
#ifdef DUMP_GROUP_BLENDS
		fz_dump_blend(dev->dest, " to get ");
		if (dev->shape)
			fz_dump_blend(dev->shape, "/");
		printf("\n");
#endif
	}
}

Example #2

File: draw_device.c Project: Buminta/BibDroid

static void
fz_draw_end_group(fz_device *devp)
{
	fz_draw_device *dev = devp->user;
	int blendmode;
	int isolated;
	float alpha;
	fz_context *ctx = dev->ctx;
	fz_draw_state *state;

	if (dev->top == 0)
	{
		fz_warn(ctx, "Unexpected end_group");
		return;
	}

	state = &dev->stack[--dev->top];
	alpha = state[1].alpha;
	blendmode = state[1].blendmode & FZ_BLEND_MODEMASK;
	isolated = state[1].blendmode & FZ_BLEND_ISOLATED;
#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top, "");
	fz_dump_blend(dev->ctx, state[1].dest, "Group end: blending ");
	if (state[1].shape)
		fz_dump_blend(dev->ctx, state[1].shape, "/");
	fz_dump_blend(dev->ctx, state[0].dest, " onto ");
	if (state[0].shape)
		fz_dump_blend(dev->ctx, state[0].shape, "/");
	if (alpha != 1.0f)
		printf(" (alpha %g)", alpha);
	if (blendmode != 0)
		printf(" (blend %d)", blendmode);
	if (isolated != 0)
		printf(" (isolated)");
	if (state[1].blendmode & FZ_BLEND_KNOCKOUT)
		printf(" (knockout)");
#endif
	if ((blendmode == 0) && (state[0].shape == state[1].shape))
		fz_paint_pixmap(state[0].dest, state[1].dest, alpha * 255);
	else
		fz_blend_pixmap(state[0].dest, state[1].dest, alpha * 255, blendmode, isolated, state[1].shape);

	fz_drop_pixmap(dev->ctx, state[1].dest);
	if (state[0].shape != state[1].shape)
	{
		if (state[0].shape)
			fz_paint_pixmap(state[0].shape, state[1].shape, alpha * 255);
		fz_drop_pixmap(dev->ctx, state[1].shape);
	}
#ifdef DUMP_GROUP_BLENDS
	fz_dump_blend(dev->ctx, state[0].dest, " to get ");
	if (state[0].shape)
		fz_dump_blend(dev->ctx, state[0].shape, "/");
	printf("\n");
#endif

	if (state[0].blendmode & FZ_BLEND_KNOCKOUT)
		fz_knockout_end(dev);
}

Example #3

File: draw_device.c Project: monolithpl/sumatrapdf

static void fz_knockout_end(fz_draw_device *dev)
{
	fz_draw_state *state;
	int blendmode;
	int isolated;
	fz_context *ctx = dev->ctx;

	if (dev->top == 0)
	{
		fz_warn(ctx, "unexpected knockout end");
		return;
	}
	state = &dev->stack[--dev->top];
	if ((state[0].blendmode & FZ_BLEND_KNOCKOUT) == 0)
		return;

	blendmode = state->blendmode & FZ_BLEND_MODEMASK;
	isolated = state->blendmode & FZ_BLEND_ISOLATED;

#ifdef DUMP_GROUP_BLENDS
	dump_spaces(dev->top, "");
	fz_dump_blend(dev->ctx, state[1].dest, "Knockout end: blending ");
	if (state[1].shape)
		fz_dump_blend(dev->ctx, state[1].shape, "/");
	fz_dump_blend(dev->ctx, state[0].dest, " onto ");
	if (state[0].shape)
		fz_dump_blend(dev->ctx, state[0].shape, "/");
	if (blendmode != 0)
		printf(" (blend %d)", blendmode);
	if (isolated != 0)
		printf(" (isolated)");
	printf(" (knockout)");
#endif
	if ((blendmode == 0) && (state[0].shape == state[1].shape))
		fz_paint_pixmap(state[0].dest, state[1].dest, 255);
	else
		fz_blend_pixmap(state[0].dest, state[1].dest, 255, blendmode, isolated, state[1].shape);

	fz_drop_pixmap(dev->ctx, state[1].dest);
	if (state[0].shape != state[1].shape)
	{
		if (state[0].shape)
			fz_paint_pixmap(state[0].shape, state[1].shape, 255);
		fz_drop_pixmap(dev->ctx, state[1].shape);
	}
#ifdef DUMP_GROUP_BLENDS
	fz_dump_blend(dev->ctx, state[0].dest, " to get ");
	if (state[0].shape)
		fz_dump_blend(dev->ctx, state[0].shape, "/");
	printf("\n");
#endif
}

Example #4

File: draw_device.c Project: scroco/mupdf

static void
fz_draw_end_group(void *user)
{
	fz_draw_device *dev = user;
	fz_pixmap *group = dev->dest;
	int blendmode;
	float alpha;

	if (dev->top > 0)
	{
		dev->top--;
		alpha = dev->stack[dev->top].alpha;
		blendmode = dev->stack[dev->top].blendmode;
		dev->dest = dev->stack[dev->top].dest;
		dev->scissor = dev->stack[dev->top].scissor;

		if (blendmode == 0)
			fz_paint_pixmap(dev->dest, group, alpha * 255);
		else
			fz_blend_pixmap(dev->dest, group, alpha * 255, blendmode);

		fz_drop_pixmap(group);
	}
}