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LibGUI: Add a setting to make GLabel stretch its icon.

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Use this in QuickShow to allow arbitrarily scaling the opened image.
This commit is contained in:
Andreas Kling 2019-03-22 04:20:48 +01:00
parent 86570d3b1a
commit d563dc0565
Notes: sideshowbarker 2024-07-19 14:58:21 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/d563dc05652
3 changed files with 38 additions and 4 deletions
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9
LibGUI/GLabel.cpp
View file

@ -34,11 +34,16 @@ void GLabel::paint_event(GPaintEvent& event)
{
Painter painter(*this);
painter.set_clip_rect(event.rect());
if (fill_with_background_color())
painter.fill_rect({ 0, 0, width(), height() }, background_color());
if (m_icon) {
auto icon_location = rect().center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2));
painter.blit(icon_location, *m_icon, m_icon->rect());
if (m_should_stretch_icon) {
painter.draw_scaled_bitmap(rect(), *m_icon, m_icon->rect());
} else {
auto icon_location = rect().center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2));
painter.blit(icon_location, *m_icon, m_icon->rect());
}
}
if (!text().is_empty())
painter.draw_text({ 0, 0, width(), height() }, text(), m_text_alignment, foreground_color());

4
LibGUI/GLabel.h
View file

@ -22,6 +22,9 @@ public:
TextAlignment text_alignment() const { return m_text_alignment; }
void set_text_alignment(TextAlignment text_alignment) { m_text_alignment = text_alignment; }
bool should_stretch_icon() const { return m_should_stretch_icon; }
void set_should_stretch_icon(bool b) { m_should_stretch_icon = b; }
void size_to_fit();
virtual const char* class_name() const override { return "GLabel"; }
@ -32,5 +35,6 @@ private:
String m_text;
RetainPtr<GraphicsBitmap> m_icon;
TextAlignment m_text_alignment { TextAlignment::Center };
bool m_should_stretch_icon { false };
};

29
Userland/qs.cpp
View file

@ -2,12 +2,36 @@
#include <LibGUI/GApplication.h>
#include <LibGUI/GWindow.h>
#include <LibGUI/GLabel.h>
#include <LibGUI/GBoxLayout.h>
#include <LibGUI/GMenuBar.h>
#include <LibGUI/GMenu.h>
#include <LibGUI/GAction.h>
#include <stdio.h>
int main(int argc, char** argv)
{
GApplication app(argc, argv);
auto menubar = make<GMenuBar>();
auto app_menu = make<GMenu>("QuickShow");
app_menu->add_action(GAction::create("Quit", { Mod_Alt, Key_F4 }, [] (const GAction&) {
GApplication::the().quit(0);
return;
}));
menubar->add_menu(move(app_menu));
auto file_menu = make<GMenu>("File");
menubar->add_menu(move(file_menu));
auto help_menu = make<GMenu>("Help");
help_menu->add_action(GAction::create("About", [] (const GAction&) {
dbgprintf("FIXME: Implement Help/About\n");
}));
menubar->add_menu(move(help_menu));
app.set_menubar(move(menubar));
#if 0
if (argc != 2) {
printf("usage: qs <image-file>\n");
@ -32,12 +56,13 @@ int main(int argc, char** argv)
window->set_rect(200, 200, bitmap->width(), bitmap->height());
auto* widget = new GWidget;
widget->set_fill_with_background_color(true);
window->set_main_widget(widget);
widget->set_layout(make<GBoxLayout>(Orientation::Vertical));
auto* label = new GLabel(widget);
label->set_relative_rect({ 0, 0, bitmap->width(), bitmap->height() });
label->set_icon(move(bitmap));
label->set_should_stretch_icon(true);
window->set_should_exit_event_loop_on_close(true);
window->show();