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Code Releases Wiki Activity

Fix Color Picking

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With the 4.x-introduction of Windows the previous method for
color picking was no longer working.

This PR uses the following approach to reintroduce color-picking.
When the Color-Picking-Button is pressed, a quasi-screenshot of the
Window-content is created and displayed in a new Popup-Window.
This new Window allows selecting colors by Mouse-Click.
A Preview of the targeted Color is also displayed.
This commit is contained in:
Markus Sauermann
2023-02-05 17:35:39 +01:00
parent 2572f6800a
commit 888add8418
5 changed files with 108 additions and 53 deletions
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115
scene/gui/color_picker.cpp
View File

@@ -31,10 +31,12 @@
#include "color_picker.h"
#include "core/input/input.h"
#include "core/io/image.h"
#include "core/math/color.h"
#include "core/os/keyboard.h"
#include "core/os/os.h"
#include "scene/gui/color_mode.h"
#include "servers/display_server.h"
#include "thirdparty/misc/ok_color.h"
#include "thirdparty/misc/ok_color_shader.h"
@@ -90,8 +92,8 @@ void ColorPicker::_notification(int p_what) {
} break;
case NOTIFICATION_WM_CLOSE_REQUEST: {
if (screen != nullptr && screen->is_visible()) {
screen->hide();
if (picker_window != nullptr && picker_window->is_visible()) {
picker_window->hide();
}
} break;
}
@@ -1372,30 +1374,26 @@ void ColorPicker::_recent_preset_pressed(const bool p_pressed, ColorPresetButton
emit_signal(SNAME("color_changed"), p_preset->get_preset_color());
}
void ColorPicker::_screen_input(const Ref<InputEvent> &p_event) {
void ColorPicker::_picker_texture_input(const Ref<InputEvent> &p_event) {
if (!is_inside_tree()) {
return;
}
Ref<InputEventMouseButton> bev = p_event;
if (bev.is_valid() && bev->get_button_index() == MouseButton::LEFT && !bev->is_pressed()) {
set_pick_color(picker_color);
emit_signal(SNAME("color_changed"), color);
screen->hide();
picker_window->hide();
}
Ref<InputEventMouseMotion> mev = p_event;
if (mev.is_valid()) {
Viewport *r = get_tree()->get_root();
if (!r->get_visible_rect().has_point(mev->get_global_position())) {
return;
}
Ref<Image> img = r->get_texture()->get_image();
Ref<Image> img = picker_texture_rect->get_texture()->get_image();
if (img.is_valid() && !img->is_empty()) {
Vector2 ofs = mev->get_global_position();
Color c = img->get_pixel(ofs.x, ofs.y);
set_pick_color(c);
Vector2 ofs = mev->get_position();
picker_color = img->get_pixel(ofs.x, ofs.y);
picker_preview_style_box->set_bg_color(picker_color);
picker_preview_label->set_self_modulate(picker_color.get_luminance() < 0.5 ? Color(1.0f, 1.0f, 1.0f) : Color(0.0f, 0.0f, 0.0f));
}
}
}
@@ -1409,27 +1407,79 @@ void ColorPicker::_add_preset_pressed() {
emit_signal(SNAME("preset_added"), color);
}
void ColorPicker::_screen_pick_pressed() {
void ColorPicker::_pick_button_pressed() {
if (!is_inside_tree()) {
return;
}
Viewport *r = get_tree()->get_root();
if (!screen) {
screen = memnew(Control);
r->add_child(screen);
screen->set_as_top_level(true);
screen->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
screen->set_default_cursor_shape(CURSOR_POINTING_HAND);
screen->connect("gui_input", callable_mp(this, &ColorPicker::_screen_input));
// It immediately toggles off in the first press otherwise.
screen->call_deferred(SNAME("connect"), "hidden", Callable(btn_pick, "set_pressed").bind(false));
} else {
screen->show();
if (!picker_window) {
picker_window = memnew(Popup);
picker_window->hide();
picker_window->set_transient(true);
add_child(picker_window);
picker_texture_rect = memnew(TextureRect);
picker_texture_rect->set_anchors_preset(Control::PRESET_FULL_RECT);
picker_window->add_child(picker_texture_rect);
picker_texture_rect->set_default_cursor_shape(CURSOR_POINTING_HAND);
picker_texture_rect->connect(SNAME("gui_input"), callable_mp(this, &ColorPicker::_picker_texture_input));
picker_preview = memnew(Panel);
picker_preview->set_anchors_preset(Control::PRESET_CENTER_TOP);
picker_preview->set_mouse_filter(MOUSE_FILTER_IGNORE);
picker_window->add_child(picker_preview);
picker_preview_label = memnew(Label);
picker_preview->set_anchors_preset(Control::PRESET_CENTER_TOP);
picker_preview_label->set_text("Color Picking active");
picker_preview->add_child(picker_preview_label);
picker_preview_style_box = (Ref<StyleBoxFlat>)memnew(StyleBoxFlat);
picker_preview_style_box->set_bg_color(Color(1.0, 1.0, 1.0));
picker_preview->add_theme_style_override("panel", picker_preview_style_box);
}
screen->move_to_front();
// TODO: show modal no longer works, needs to be converted to a popup.
//screen->show_modal();
Rect2i screen_rect;
if (picker_window->is_embedded()) {
screen_rect = picker_window->get_embedder()->get_visible_rect();
picker_window->set_position(Point2i());
picker_texture_rect->set_texture(ImageTexture::create_from_image(picker_window->get_embedder()->get_texture()->get_image()));
} else {
screen_rect = picker_window->get_parent_rect();
picker_window->set_position(screen_rect.position);
Ref<Image> target_image = Image::create_empty(screen_rect.size.x, screen_rect.size.y, false, Image::FORMAT_RGB8);
DisplayServer *ds = DisplayServer::get_singleton();
// Add the Texture of each Window to the Image.
Vector<DisplayServer::WindowID> wl = ds->get_window_list();
// FIXME: sort windows by visibility.
for (int index = 0; index < wl.size(); index++) {
DisplayServer::WindowID wid = wl[index];
if (wid == DisplayServer::INVALID_WINDOW_ID) {
continue;
}
ObjectID woid = DisplayServer::get_singleton()->window_get_attached_instance_id(wid);
if (woid == ObjectID()) {
continue;
}
Window *w = Object::cast_to<Window>(ObjectDB::get_instance(woid));
Ref<Image> img = w->get_texture()->get_image();
if (!img.is_valid() || img->is_empty()) {
continue;
}
img->convert(Image::FORMAT_RGB8);
target_image->blit_rect(img, Rect2i(Point2i(0, 0), img->get_size()), w->get_position());
}
picker_texture_rect->set_texture(ImageTexture::create_from_image(target_image));
}
picker_window->set_size(screen_rect.size);
picker_preview->set_size(screen_rect.size / 10.0); // 10% of size in each axis.
picker_window->popup();
}
void ColorPicker::_html_focus_exit() {
@@ -1595,9 +1645,8 @@ ColorPicker::ColorPicker() {
btn_pick = memnew(Button);
sample_hbc->add_child(btn_pick);
btn_pick->set_toggle_mode(true);
btn_pick->set_tooltip_text(RTR("Pick a color from the editor window."));
btn_pick->connect("pressed", callable_mp(this, &ColorPicker::_screen_pick_pressed));
btn_pick->set_tooltip_text(RTR("Pick a color from the application window."));
btn_pick->connect(SNAME("pressed"), callable_mp(this, &ColorPicker::_pick_button_pressed));
sample = memnew(TextureRect);
sample_hbc->add_child(sample);