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DisplaySettings: Add UI for switching the scale factor
For now, only support 1x and 2x scale. I tried doing something "smarter" first where the UI would try to keep the physical resolution constant when toggling between 1x and 2x, but many of the smaller 1x resolutions map to 2x logical resolutions that Compositor rejects (e.g. 1024x768 becomes 512x384, which is less than the minimum 640x480 that Compositor wants) and it felt complicated and overly magical. So this instead just gives you a 1x/2x toggle and a dropdown with logical (!) resolutions. That is, 800x600 @ 2x gives you a physical resolution of 1600x1200. If we don't like this after trying it for a while, we can change the UI then.
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6 changed files with 76 additions and 12 deletions
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@ -27,6 +27,7 @@
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#include "MonitorWidget.h"
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#include <LibGUI/Painter.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Font.h>
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namespace DisplaySettings {
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@ -110,8 +111,23 @@ void MonitorWidget::paint_event(GUI::PaintEvent& event)
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painter.draw_scaled_bitmap(m_monitor_rect, *screen_bitmap, screen_bitmap->rect());
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if (!m_desktop_resolution.is_null()) {
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painter.draw_text(m_monitor_rect.translated(1, 1), m_desktop_resolution.to_string(), Gfx::TextAlignment::Center, Color::Black);
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painter.draw_text(m_monitor_rect, m_desktop_resolution.to_string(), Gfx::TextAlignment::Center, Color::White);
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auto displayed_resolution_string = Gfx::IntSize { m_desktop_resolution.width(), m_desktop_resolution.height() }.to_string();
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// Render text label scaled with scale factor to hint at its effect.
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// FIXME: Once bitmaps have intrinsic scale factors, we could create a bitmap with an intrinsic scale factor of m_desktop_scale_factor
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// and that should give us the same effect with less code.
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auto text_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, Gfx::IntSize { painter.font().width(displayed_resolution_string) + 1, painter.font().glyph_height() + 1 });
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GUI::Painter text_painter(*text_bitmap);
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text_painter.set_font(painter.font());
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text_painter.draw_text({}, displayed_resolution_string, Gfx::TextAlignment::BottomRight, Color::Black);
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text_painter.draw_text({}, displayed_resolution_string, Gfx::TextAlignment::TopLeft, Color::White);
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Gfx::IntRect text_rect = text_bitmap->rect();
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text_rect.set_width(text_rect.width() * m_desktop_scale_factor);
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text_rect.set_height(text_rect.height() * m_desktop_scale_factor);
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text_rect.center_within(m_monitor_rect);
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painter.draw_scaled_bitmap(text_rect, *text_bitmap, text_bitmap->rect());
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}
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}
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