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https://github.com/RGBCube/serenity
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a79bac428b
GApplication now has a palette. This palette contains all the system theme colors by default, and is inherited by a new top-level GWidget. New child widgets inherit their parents palette. It is possible to override the GApplication palette, and the palette of any GWidget. The Palette object contains a bunch of colors, each corresponding to a ColorRole. Each role has a convenience getter as well. Each GWidget now has a background_role() and foreground_role(), which are then looked up in their current palette when painting. This means that you no longer alter the background color of a widget by setting it directly, rather you alter either its background role, or the widget's palette.
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
#include "GlyphMapWidget.h"
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#include <LibDraw/Palette.h>
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#include <LibGUI/GPainter.h>
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GlyphMapWidget::GlyphMapWidget(Font& mutable_font, GWidget* parent)
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: GFrame(parent)
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, m_font(mutable_font)
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{
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set_frame_thickness(2);
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set_frame_shape(FrameShape::Container);
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set_frame_shadow(FrameShadow::Sunken);
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set_relative_rect({ 0, 0, preferred_width(), preferred_height() });
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}
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GlyphMapWidget::~GlyphMapWidget()
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{
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}
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int GlyphMapWidget::preferred_width() const
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{
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return columns() * (font().max_glyph_width() + m_horizontal_spacing) + 2 + frame_thickness() * 2;
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}
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int GlyphMapWidget::preferred_height() const
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{
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return rows() * (font().glyph_height() + m_vertical_spacing) + 2 + frame_thickness() * 2;
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}
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void GlyphMapWidget::set_selected_glyph(u8 glyph)
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{
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if (m_selected_glyph == glyph)
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return;
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m_selected_glyph = glyph;
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if (on_glyph_selected)
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on_glyph_selected(glyph);
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update();
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}
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Rect GlyphMapWidget::get_outer_rect(u8 glyph) const
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{
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int row = glyph / columns();
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int column = glyph % columns();
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return Rect {
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column * (font().max_glyph_width() + m_horizontal_spacing) + 1,
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row * (font().glyph_height() + m_vertical_spacing) + 1,
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font().max_glyph_width() + m_horizontal_spacing,
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font().glyph_height() + m_horizontal_spacing
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}
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.translated(frame_thickness(), frame_thickness());
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}
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void GlyphMapWidget::update_glyph(u8 glyph)
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{
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update(get_outer_rect(glyph));
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}
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void GlyphMapWidget::paint_event(GPaintEvent& event)
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{
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GFrame::paint_event(event);
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GPainter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.set_font(font());
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painter.fill_rect(frame_inner_rect(), Color::White);
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u8 glyph = 0;
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for (int row = 0; row < rows(); ++row) {
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for (int column = 0; column < columns(); ++column, ++glyph) {
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Rect outer_rect = get_outer_rect(glyph);
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Rect inner_rect(
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outer_rect.x() + m_horizontal_spacing / 2,
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outer_rect.y() + m_vertical_spacing / 2,
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font().max_glyph_width(),
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font().glyph_height());
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if (glyph == m_selected_glyph) {
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painter.fill_rect(outer_rect, palette().selection());
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painter.draw_glyph(inner_rect.location(), glyph, Color::White);
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} else {
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painter.draw_glyph(inner_rect.location(), glyph, Color::Black);
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}
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}
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}
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}
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void GlyphMapWidget::mousedown_event(GMouseEvent& event)
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{
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// FIXME: This is a silly loop.
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for (unsigned glyph = 0; glyph < 256; ++glyph) {
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if (get_outer_rect(glyph).contains(event.position())) {
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set_selected_glyph(glyph);
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break;
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}
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}
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}
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