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LibGUI: Allow to specify position on screen for Dialog window
This change allows us to specify where on screen we'd like the Dialog window to be drawn. By default it's set to CenterWithinParent which may fall back to Center if parent window is unset or not visible on screen.
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parent
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commit
84ee95c346
Notes:
sideshowbarker
2024-07-18 07:56:28 +09:00
Author: https://github.com/luk1337 Commit: https://github.com/SerenityOS/serenity/commit/84ee95c346c Pull-request: https://github.com/SerenityOS/serenity/pull/8737 Reviewed-by: https://github.com/metmo
@ -5,13 +5,15 @@
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*/
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#include <LibCore/EventLoop.h>
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#include <LibGUI/Desktop.h>
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#include <LibGUI/Dialog.h>
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#include <LibGUI/Event.h>
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namespace GUI {
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Dialog::Dialog(Window* parent_window)
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Dialog::Dialog(Window* parent_window, ScreenPosition screen_position)
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: Window(parent_window)
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, m_screen_position(screen_position)
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{
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set_modal(true);
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set_minimizable(false);
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@ -25,16 +27,64 @@ int Dialog::exec()
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{
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VERIFY(!m_event_loop);
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m_event_loop = make<Core::EventLoop>();
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if (parent() && is<Window>(parent())) {
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auto& parent_window = *static_cast<Window*>(parent());
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if (parent_window.is_visible()) {
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center_within(parent_window);
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} else {
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center_on_screen();
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auto desktop_rect = Desktop::the().rect();
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auto window_rect = rect();
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auto top_align = [](Gfx::Rect<int>& rect) { rect.set_y(32); };
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auto bottom_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_y(desktop_rect.height() - Desktop::the().taskbar_height() - height() - 12); };
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auto left_align = [](Gfx::Rect<int>& rect) { rect.set_x(12); };
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auto right_align = [this, desktop_rect](Gfx::Rect<int>& rect) { rect.set_x(desktop_rect.width() - width() - 12); };
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switch (m_screen_position) {
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case CenterWithinParent:
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if (parent() && is<Window>(parent())) {
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auto& parent_window = *static_cast<Window*>(parent());
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if (parent_window.is_visible()) {
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window_rect.center_within(parent_window.rect());
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break;
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}
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}
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} else {
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center_on_screen();
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[[fallthrough]]; // Fall back to `Center` if parent window is invalid or not visible
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case Center:
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window_rect.center_within(desktop_rect);
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break;
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case CenterLeft:
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left_align(window_rect);
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window_rect.center_vertically_within(desktop_rect);
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break;
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case CenterRight:
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right_align(window_rect);
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window_rect.center_vertically_within(desktop_rect);
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break;
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case TopLeft:
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left_align(window_rect);
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top_align(window_rect);
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break;
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case TopCenter:
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window_rect.center_horizontally_within(desktop_rect);
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top_align(window_rect);
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break;
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case TopRight:
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right_align(window_rect);
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top_align(window_rect);
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break;
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case BottomLeft:
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left_align(window_rect);
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bottom_align(window_rect);
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break;
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case BottomCenter:
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window_rect.center_horizontally_within(desktop_rect);
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bottom_align(window_rect);
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break;
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case BottomRight:
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right_align(window_rect);
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bottom_align(window_rect);
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break;
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}
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set_rect(window_rect);
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show();
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auto result = m_event_loop->exec();
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m_event_loop = nullptr;
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@ -20,6 +20,21 @@ public:
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ExecYes = 3,
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ExecNo = 4,
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};
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enum ScreenPosition {
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CenterWithinParent = 0,
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Center = 1,
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CenterLeft = 2,
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CenterRight = 3,
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TopLeft = 4,
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TopCenter = 5,
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TopRight = 6,
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BottomLeft = 7,
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BottomCenter = 8,
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BottomRight = 9,
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};
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virtual ~Dialog() override;
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@ -33,11 +48,12 @@ public:
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virtual void close() override;
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protected:
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explicit Dialog(Window* parent_window);
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explicit Dialog(Window* parent_window, ScreenPosition screen_position = CenterWithinParent);
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private:
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OwnPtr<Core::EventLoop> m_event_loop;
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int m_result { ExecAborted };
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int m_screen_position { CenterWithinParent };
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};
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}
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