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LibDraw+LibGUI: Allow changing individual colors in a Palette

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Palette is now a value wrapper around a NonnullRefPtr<PaletteImpl>.
A new function, set_color(ColorRole, Color) implements a simple
copy-on-write mechanism so that we're sharing the PaletteImpl in the
common case, but allowing you to create custom palettes if you like,
by getting a GWidget's palette, modifying it, and then assigning the
modified palette to the widget via GWidget::set_palette().

Use this to make PaintBrush show its palette colors once again.

Fixes #943.
This commit is contained in:
Andreas Kling 2019-12-29 00:47:49 +01:00
parent 19d4f4c7b5
commit 7b2dd7e116
18 changed files with 98 additions and 40 deletions
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16
Applications/PaintBrush/PaletteWidget.cpp
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@ -26,7 +26,9 @@ public:
auto dialog = ColorDialog::construct(m_color, window());
if (dialog->exec() == GDialog::ExecOK) {
m_color = dialog->color();
set_background_color(m_color);
auto pal = palette();
pal.set_color(ColorRole::Background, m_color);
set_palette(pal);
update();
}
return;
@ -97,7 +99,9 @@ PaletteWidget::PaletteWidget(PaintableWidget& paintable_widget, GWidget* parent)
auto add_color_widget = [&](GWidget* container, Color color) {
auto color_widget = ColorWidget::construct(color, *this, container);
color_widget->set_fill_with_background_color(true);
color_widget->set_background_color(color);
auto pal = color_widget->palette();
pal.set_color(ColorRole::Background, color);
color_widget->set_palette(pal);
};
add_color_widget(top_color_container, Color::from_rgb(0x000000));
@ -138,13 +142,17 @@ PaletteWidget::~PaletteWidget()
void PaletteWidget::set_primary_color(Color color)
{
m_paintable_widget.set_primary_color(color);
m_primary_color_widget->set_background_color(color);
auto pal = m_primary_color_widget->palette();
pal.set_color(ColorRole::Background, color);
m_primary_color_widget->set_palette(pal);
m_primary_color_widget->update();
}
void PaletteWidget::set_secondary_color(Color color)
{
m_paintable_widget.set_secondary_color(color);
m_secondary_color_widget->set_background_color(color);
auto pal = m_secondary_color_widget->palette();
pal.set_color(ColorRole::Background, color);
m_secondary_color_widget->set_palette(pal);
m_secondary_color_widget->update();
}