mirror of https://github.com/yshui/picom.git
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2018 Yuxuan Shui <yshuiv7@gmail.com>
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#pragma once
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#include <pixman.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <xcb/xcb.h>
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#include "log.h"
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#include "types.h"
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#include "utils.h"
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typedef struct pixman_region32 pixman_region32_t;
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typedef struct pixman_box32 pixman_box32_t;
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typedef pixman_region32_t region_t;
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typedef pixman_box32_t rect_t;
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RC_TYPE(region_t, rc_region, pixman_region32_init, pixman_region32_fini, static inline)
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static inline void dump_region(const region_t *x) {
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if (log_get_level_tls() < LOG_LEVEL_TRACE) {
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return;
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}
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int nrects;
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const rect_t *rects = pixman_region32_rectangles((region_t *)x, &nrects);
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log_trace("nrects: %d", nrects);
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for (int i = 0; i < nrects; i++) {
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log_trace("(%d, %d) - (%d, %d)", rects[i].x1, rects[i].y1, rects[i].x2,
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rects[i].y2);
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}
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}
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/// Convert one xcb rectangle to our rectangle type
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static inline rect_t from_x_rect(const xcb_rectangle_t *rect) {
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return (rect_t){
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.x1 = rect->x,
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.y1 = rect->y,
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.x2 = rect->x + rect->width,
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.y2 = rect->y + rect->height,
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};
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}
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/// Convert an array of xcb rectangles to our rectangle type
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/// Returning an array that needs to be freed
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static inline rect_t *from_x_rects(int nrects, const xcb_rectangle_t *rects) {
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rect_t *ret = ccalloc(nrects, rect_t);
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for (int i = 0; i < nrects; i++) {
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ret[i] = from_x_rect(rects + i);
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}
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return ret;
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}
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/**
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* Resize a region.
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*/
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static inline void _resize_region(const region_t *region, region_t *output, int dx, int dy) {
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if (!region || !output) {
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return;
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}
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if (!dx && !dy) {
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if (region != output) {
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pixman_region32_copy(output, (region_t *)region);
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}
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return;
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}
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// Loop through all rectangles
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int nrects;
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int nnewrects = 0;
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const rect_t *rects = pixman_region32_rectangles((region_t *)region, &nrects);
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auto newrects = ccalloc(nrects, rect_t);
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for (int i = 0; i < nrects; i++) {
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int x1 = rects[i].x1 - dx;
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int y1 = rects[i].y1 - dy;
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int x2 = rects[i].x2 + dx;
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int y2 = rects[i].y2 + dy;
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int wid = x2 - x1;
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int hei = y2 - y1;
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if (wid <= 0 || hei <= 0) {
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continue;
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}
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newrects[nnewrects] = (rect_t){.x1 = x1, .x2 = x2, .y1 = y1, .y2 = y2};
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++nnewrects;
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}
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pixman_region32_fini(output);
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pixman_region32_init_rects(output, newrects, nnewrects);
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free(newrects);
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}
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static inline region_t resize_region(const region_t *region, int dx, int dy) {
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region_t ret;
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pixman_region32_init(&ret);
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_resize_region(region, &ret, dx, dy);
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return ret;
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}
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static inline void resize_region_in_place(region_t *region, int dx, int dy) {
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return _resize_region(region, region, dx, dy);
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}
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static inline rect_t region_translate_rect(rect_t rect, struct coord origin) {
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return (rect_t){
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.x1 = rect.x1 + origin.x,
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.y1 = rect.y1 + origin.y,
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.x2 = rect.x2 + origin.x,
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.y2 = rect.y2 + origin.y,
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};
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} |