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LibGfx: Implement blit_offset() in terms of blit()

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It's less code, and blit() already handles scaled painters.

Fixes the window server asserting in highdpi mode with a centered
background image. Part of #5017.
This commit is contained in:
Nico Weber 2021-01-22 11:12:00 -05:00 • committed by Andreas Kling
parent 586c0aa043
commit 2fe6a313c2
3 changed files with 15 additions and 38 deletions
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4
Userland/Applications/DisplaySettings/MonitorWidget.cpp
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@ -84,7 +84,7 @@ Gfx::Color MonitorWidget::background_color()
void MonitorWidget::paint_event(GUI::PaintEvent& event)
{
Gfx::IntRect screen_rect = { 0, 0, m_desktop_resolution.width(), m_desktop_resolution.height() };
Gfx::IntRect screen_rect = { { 0, 0 }, m_desktop_resolution };
auto screen_bitmap = Gfx::Bitmap::create(m_monitor_bitmap->format(), m_desktop_resolution);
GUI::Painter screen_painter(*screen_bitmap);
screen_painter.fill_rect(screen_rect, m_desktop_color);
@ -93,7 +93,7 @@ void MonitorWidget::paint_event(GUI::PaintEvent& event)
if (m_desktop_wallpaper_mode == "simple") {
screen_painter.blit({ 0, 0 }, *m_desktop_wallpaper_bitmap, m_desktop_wallpaper_bitmap->rect());
} else if (m_desktop_wallpaper_mode == "center") {
Gfx::IntPoint offset { screen_rect.width() / 2 - m_desktop_wallpaper_bitmap->size().width() / 2, screen_rect.height() / 2 - m_desktop_wallpaper_bitmap->size().height() / 2 };
Gfx::IntPoint offset { (screen_rect.width() - m_desktop_wallpaper_bitmap->width()) / 2, (screen_rect.height() - m_desktop_wallpaper_bitmap->height()) / 2 };
screen_painter.blit_offset(screen_rect.location(), *m_desktop_wallpaper_bitmap, screen_rect, offset);
} else if (m_desktop_wallpaper_mode == "tile") {
screen_painter.draw_tiled_bitmap(screen_bitmap->rect(), *m_desktop_wallpaper_bitmap);