mirror of
https://github.com/RGBCube/serenity
synced 2025-05-18 19:05:06 +00:00
eedb4f6b2f
This needs more work and polish, but it's a step in a more pleasant and useful direction. Also turn QuickShow into a fully-fledged "application". (By that, I really just mean giving it its own Applications/ subdirectory.)
85 lines
1.9 KiB
C++
85 lines
1.9 KiB
C++
#include "QSWidget.h"
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#include <LibGUI/GPainter.h>
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#include <SharedGraphics/GraphicsBitmap.h>
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QSWidget::QSWidget(GWidget* parent)
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: GFrame(parent)
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{
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set_frame_shape(FrameShape::Container);
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set_frame_shadow(FrameShadow::Sunken);
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set_frame_thickness(2);
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set_background_color(Color::White);
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}
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QSWidget::~QSWidget()
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{
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}
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void QSWidget::set_bitmap(NonnullRefPtr<GraphicsBitmap> bitmap)
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{
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set_fill_with_background_color(bitmap->has_alpha_channel());
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m_bitmap = move(bitmap);
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}
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void QSWidget::relayout()
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{
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Size new_size;
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float scale_factor = (float)m_scale / 100.0f;
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new_size.set_width(m_bitmap->width() * scale_factor);
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new_size.set_height(m_bitmap->height() * scale_factor);
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m_bitmap_rect.set_size(new_size);
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update();
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}
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void QSWidget::resize_event(GResizeEvent& event)
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{
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relayout();
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GWidget::resize_event(event);
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}
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void QSWidget::paint_event(GPaintEvent& event)
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{
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GPainter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.draw_scaled_bitmap(m_bitmap_rect, *m_bitmap, m_bitmap->rect());
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}
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void QSWidget::mousedown_event(GMouseEvent& event)
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{
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if (event.button() != GMouseButton::Left)
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return;
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m_pan_origin = event.position();
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m_pan_bitmap_origin = m_bitmap_rect.location();
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}
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void QSWidget::mouseup_event(GMouseEvent& event)
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{
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UNUSED_PARAM(event);
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}
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void QSWidget::mousemove_event(GMouseEvent& event)
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{
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if (!(event.buttons() & GMouseButton::Left))
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return;
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auto delta = event.position() - m_pan_origin;
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m_bitmap_rect.set_location(m_pan_bitmap_origin.translated(delta));
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update();
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}
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void QSWidget::mousewheel_event(GMouseEvent& event)
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{
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auto old_scale = m_scale;
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m_scale += -event.wheel_delta() * 10;
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if (m_scale < 10)
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m_scale = 10;
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if (m_scale > 1000)
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m_scale = 1000;
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relayout();
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if (old_scale != m_scale) {
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if (on_scale_change)
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on_scale_change(m_scale);
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}
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}
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