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Add window resize indicator
This commit is contained in:
Consolatis
parent
c8321e3264
commit
58b33fb0c9
12 changed files with 296 additions and 0 deletions
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@ -1,4 +1,5 @@
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labwc_sources += files(
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'resize_indicator.c',
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'ssd.c',
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'ssd_part.c',
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'ssd_titlebar.c',
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222
src/ssd/resize_indicator.c
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222
src/ssd/resize_indicator.c
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@ -0,0 +1,222 @@
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// SPDX-License-Identifier: GPL-2.0-only
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#include <assert.h>
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#include <wlr/types/wlr_scene.h>
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#include <wlr/util/box.h>
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#include <wlr/util/log.h>
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#include "common/scaled_font_buffer.h"
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#include "labwc.h"
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#include "resize_indicator.h"
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#include "view.h"
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static void
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resize_indicator_reconfigure_view(struct resize_indicator *indicator)
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{
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assert(indicator->tree);
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struct theme *theme = rc.theme;
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indicator->height = font_height(&rc.font_osd)
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+ 2 * theme->osd_window_switcher_padding
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+ 2 * theme->osd_border_width;
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/* Static positions */
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wlr_scene_node_set_position(&indicator->background->node,
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theme->osd_border_width, theme->osd_border_width);
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wlr_scene_node_set_position(&indicator->text->scene_buffer->node,
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theme->osd_border_width + theme->osd_window_switcher_padding,
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theme->osd_border_width + theme->osd_window_switcher_padding);
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/* Colors */
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wlr_scene_rect_set_color(indicator->border, theme->osd_border_color);
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wlr_scene_rect_set_color(indicator->background, theme->osd_bg_color);
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}
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static void
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resize_indicator_init(struct view *view)
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{
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assert(view);
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struct resize_indicator *indicator = &view->resize_indicator;
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assert(!indicator->tree);
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indicator->tree = wlr_scene_tree_create(view->scene_tree);
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indicator->border = wlr_scene_rect_create(
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indicator->tree, 0, 0, rc.theme->osd_border_color);
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indicator->background = wlr_scene_rect_create(
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indicator->tree, 0, 0, rc.theme->osd_bg_color);
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indicator->text = scaled_font_buffer_create(indicator->tree);
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wlr_scene_node_set_enabled(&indicator->tree->node, false);
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resize_indicator_reconfigure_view(indicator);
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}
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static struct wlr_box
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get_size_hints(struct view *view)
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{
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assert(view);
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struct wlr_box hints = { 0 };
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if (view->impl->fill_size_hints) {
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view->impl->fill_size_hints(view, &hints);
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}
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return hints;
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}
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static bool
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wants_indicator(struct view *view)
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{
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assert(view);
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if (rc.resize_indicator == LAB_RESIZE_INDICATOR_NON_PIXEL) {
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if (view->server->input_mode != LAB_INPUT_STATE_RESIZE) {
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return false;
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}
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struct wlr_box size_hints = get_size_hints(view);
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if (size_hints.width && size_hints.height) {
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return true;
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}
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}
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return rc.resize_indicator == LAB_RESIZE_INDICATOR_ALWAYS;
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}
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void
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resize_indicator_reconfigure(struct server *server)
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{
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struct view *view;
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wl_list_for_each(view, &server->views, link) {
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struct resize_indicator *indicator = &view->resize_indicator;
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if (indicator->tree) {
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resize_indicator_reconfigure_view(indicator);
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}
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if (view != server->grabbed_view) {
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continue;
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}
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/* This view is currently in an interactive move/resize operation */
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if (indicator->tree && indicator->tree->node.enabled) {
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/* Indicator was active while reloading the config */
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if (wants_indicator(view)) {
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/* Apply new font setting */
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resize_indicator_update(view);
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} else {
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/* Indicator was disabled in config */
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resize_indicator_hide(view);
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}
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} else if (wants_indicator(view)) {
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/* Indicator not yet active */
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resize_indicator_show(view);
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}
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}
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}
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static void
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resize_indicator_set_size(struct resize_indicator *indicator, int width)
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{
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assert(indicator->tree);
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/* We are not using a width-cache-early-out here to allow for theme changes */
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indicator->width = width
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+ 2 * rc.theme->osd_window_switcher_padding
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+ 2 * rc.theme->osd_border_width;
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wlr_scene_rect_set_size(indicator->border, indicator->width, indicator->height);
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wlr_scene_rect_set_size(indicator->background,
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indicator->width - 2 * rc.theme->osd_border_width,
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indicator->height - 2 * rc.theme->osd_border_width);
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}
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void
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resize_indicator_show(struct view *view)
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{
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assert(view);
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if (!wants_indicator(view)) {
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return;
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}
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struct resize_indicator *indicator = &view->resize_indicator;
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if (!indicator->tree) {
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/* Lazy initialize */
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resize_indicator_init(view);
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}
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wlr_scene_node_raise_to_top(&indicator->tree->node);
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wlr_scene_node_set_enabled(&indicator->tree->node, true);
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resize_indicator_update(view);
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}
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void
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resize_indicator_update(struct view *view)
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{
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assert(view);
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assert(view == view->server->grabbed_view);
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if (!wants_indicator(view)) {
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return;
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}
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struct resize_indicator *indicator = &view->resize_indicator;
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if (!indicator->tree) {
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/*
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* Future-proofs this routine:
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*
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* This can only happen when either src/interactive.c
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* stops calling resize_indicator_show(), there is a
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* bug in this file or resize_indicator_reconfigure()
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* gets changed.
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*/
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wlr_log(WLR_INFO, "Warning: resize_indicator has to use a fallback path");
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resize_indicator_show(view);
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}
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char text[32]; /* 12345 x 12345 would be 13 chars + 1 null byte */
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switch (view->server->input_mode) {
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case LAB_INPUT_STATE_RESIZE:
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; /* works around "a label can only be part of a statement" */
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struct wlr_box size_hints = get_size_hints(view);
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snprintf(text, sizeof(text), "%d x %d",
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view->current.width / MAX(1, size_hints.width),
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view->current.height / MAX(1, size_hints.height));
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break;
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case LAB_INPUT_STATE_MOVE:
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; /* works around "a label can only be part of a statement" */
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struct border margin = ssd_get_margin(view->ssd);
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snprintf(text, sizeof(text), "%d , %d",
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view->current.x - margin.left,
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view->current.y - margin.top);
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break;
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default:
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wlr_log(WLR_ERROR, "Invalid input mode for indicator update %u",
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view->server->input_mode);
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return;
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}
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/* Let the indicator change width as required by the content */
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int width = font_width(&rc.font_osd, text);
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/* font_extents() adds 4 pixels to the calculated width */
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width -= 4;
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resize_indicator_set_size(indicator, width);
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/* Center the indicator in the window */
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wlr_scene_node_set_position(&indicator->tree->node,
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(view->current.width - indicator->width) / 2,
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(view->current.height - indicator->height) / 2);
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scaled_font_buffer_update(indicator->text, text, width, &rc.font_osd,
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rc.theme->osd_label_text_color, NULL /* const char *arrow */);
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}
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void
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resize_indicator_hide(struct view *view)
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{
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assert(view);
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struct resize_indicator *indicator = &view->resize_indicator;
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if (!indicator->tree) {
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return;
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}
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wlr_scene_node_set_enabled(&indicator->tree->node, false);
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}
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