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