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This is a common practice in C projects, which simply enforces that each header must compile cleanly without implicit dependencies on other headers (see also the previous commit).
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include "common/lab-scene-rect.h"
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#include <assert.h>
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#include <wlr/types/wlr_scene.h>
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#include "common/mem.h"
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struct border_scene {
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struct wlr_scene_tree *tree;
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struct wlr_scene_rect *top, *bottom, *left, *right;
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};
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static void
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handle_node_destroy(struct wl_listener *listener, void *data)
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{
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struct lab_scene_rect *rect = wl_container_of(listener, rect, node_destroy);
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wl_list_remove(&rect->node_destroy.link);
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free(rect->borders);
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free(rect);
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}
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struct lab_scene_rect *
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lab_scene_rect_create(struct wlr_scene_tree *parent,
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struct lab_scene_rect_options *opts)
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{
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struct lab_scene_rect *rect = znew(*rect);
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rect->border_width = opts->border_width;
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rect->nr_borders = opts->nr_borders;
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rect->borders = znew_n(rect->borders[0], opts->nr_borders);
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rect->tree = wlr_scene_tree_create(parent);
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if (opts->bg_color) {
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rect->fill = wlr_scene_rect_create(rect->tree, 0, 0, opts->bg_color);
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}
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for (int i = 0; i < rect->nr_borders; i++) {
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struct border_scene *border = &rect->borders[i];
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float *color = opts->border_colors[i];
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border->tree = wlr_scene_tree_create(rect->tree);
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border->top = wlr_scene_rect_create(border->tree, 0, 0, color);
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border->right = wlr_scene_rect_create(border->tree, 0, 0, color);
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border->bottom = wlr_scene_rect_create(border->tree, 0, 0, color);
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border->left = wlr_scene_rect_create(border->tree, 0, 0, color);
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}
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rect->node_destroy.notify = handle_node_destroy;
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wl_signal_add(&rect->tree->node.events.destroy, &rect->node_destroy);
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lab_scene_rect_set_size(rect, opts->width, opts->height);
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return rect;
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}
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static void
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resize_border(struct border_scene *border, int border_width, int width, int height)
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{
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/*
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* The border is drawn like below:
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*
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* <--width-->
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* +---------+ ^
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* +-+-----+-+ |
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* | | | | height
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* | | | | |
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* +-+-----+-+ |
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* +---------+ v
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*/
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if ((width < border_width * 2) || (height < border_width * 2)) {
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wlr_scene_node_set_enabled(&border->tree->node, false);
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return;
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}
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wlr_scene_node_set_enabled(&border->tree->node, true);
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wlr_scene_node_set_position(&border->top->node, 0, 0);
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wlr_scene_node_set_position(&border->bottom->node, 0, height - border_width);
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wlr_scene_node_set_position(&border->left->node, 0, border_width);
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wlr_scene_node_set_position(&border->right->node, width - border_width, border_width);
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wlr_scene_rect_set_size(border->top, width, border_width);
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wlr_scene_rect_set_size(border->bottom, width, border_width);
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wlr_scene_rect_set_size(border->left, border_width, height - border_width * 2);
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wlr_scene_rect_set_size(border->right, border_width, height - border_width * 2);
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}
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void
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lab_scene_rect_set_size(struct lab_scene_rect *rect, int width, int height)
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{
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assert(rect);
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int border_width = rect->border_width;
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for (int i = 0; i < rect->nr_borders; i++) {
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struct border_scene *border = &rect->borders[i];
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resize_border(border, border_width,
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width - 2 * border_width * i,
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height - 2 * border_width * i);
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wlr_scene_node_set_position(&border->tree->node,
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i * border_width, i * border_width);
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}
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if (rect->fill) {
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wlr_scene_rect_set_size(rect->fill, width, height);
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}
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}
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