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LibGUI: Share code for widget rendering styles in a GStyle class.

Since GScrollBar wants its internal buttons to look like GButtons,
let's share the painting code between them.
This commit is contained in:
Andreas Kling 2019-02-10 07:11:01 +01:00
parent 9ea2131adf
commit e354c08c98
9 changed files with 88 additions and 40 deletions

52
LibGUI/GStyle.cpp Normal file
View file

@ -0,0 +1,52 @@
#include <LibGUI/GStyle.h>
#include <SharedGraphics/Painter.h>
GStyle* s_the;
GStyle& GStyle::the()
{
if (!s_the)
s_the = new GStyle;
return *s_the;
}
GStyle::GStyle()
{
}
void GStyle::paint_button(Painter& painter, const Rect& rect, bool pressed)
{
Color button_color = Color::LightGray;
Color highlight_color = Color::White;
Color shadow_color = Color(96, 96, 96);
painter.draw_rect(rect, Color::Black, true);
painter.translate(rect.location());
if (pressed) {
// Base
painter.fill_rect({ 1, 1, rect.width() - 2, rect.height() - 2 }, button_color);
// Sunken shadow
painter.draw_line({ 1, 1 }, { rect.width() - 2, 1 }, shadow_color);
painter.draw_line({ 1, 2 }, {1, rect.height() - 2 }, shadow_color);
} else {
// Base
painter.fill_rect({ 3, 3, rect.width() - 5, rect.height() - 5 }, button_color);
painter.fill_rect_with_gradient({ 3, 3, rect.width() - 5, rect.height() - 5 }, button_color, Color::White);
// White highlight
painter.draw_line({ 1, 1 }, { rect.width() - 2, 1 }, highlight_color);
painter.draw_line({ 1, 2 }, { rect.width() - 3, 2 }, highlight_color);
painter.draw_line({ 1, 3 }, { 1, rect.height() - 2 }, highlight_color);
painter.draw_line({ 2, 3 }, { 2, rect.height() - 3 }, highlight_color);
// Gray shadow
painter.draw_line({ rect.width() - 2, 1 }, { rect.width() - 2, rect.height() - 4 }, shadow_color);
painter.draw_line({ rect.width() - 3, 2 }, { rect.width() - 3, rect.height() - 4 }, shadow_color);
painter.draw_line({ 1, rect.height() - 2 }, { rect.width() - 2, rect.height() - 2 }, shadow_color);
painter.draw_line({ 2, rect.height() - 3 }, { rect.width() - 2, rect.height() - 3 }, shadow_color);
}
painter.translate(-rect.location().x(), -rect.location().y());
}