ea91f24a49
We now try to open image files dropped on us from FileManager. :^) The QuickShow code is not exactly well-factored, and should be fixes up to not do the same thing twice, etc.
130 lines
3.5 KiB
C++
130 lines
3.5 KiB
C++
#include "QSWidget.h"
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#include <AK/URL.h>
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#include <LibDraw/GraphicsBitmap.h>
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#include <LibGUI/GMessageBox.h>
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#include <LibGUI/GPainter.h>
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#include <LibGUI/GWindow.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_fill_with_background_color(true);
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set_background_color(Color::Black);
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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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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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auto old_scale_factor = (float)m_scale / 100.0f;
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auto zoom_point = event.position().translated(-m_bitmap_rect.location());
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zoom_point.set_x((float)zoom_point.x() / old_scale_factor);
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zoom_point.set_y((float)zoom_point.y() / old_scale_factor);
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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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auto new_scale_factor = (float)m_scale / 100.0f;
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auto scale_factor_change = new_scale_factor - old_scale_factor;
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m_bitmap_rect.move_by(-Point((float)zoom_point.x() * scale_factor_change, (float)zoom_point.y() * scale_factor_change));
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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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void QSWidget::set_path(const String& path)
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{
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m_path = path;
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}
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void QSWidget::drop_event(GDropEvent& event)
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{
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event.accept();
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window()->move_to_front();
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if (event.data_type() == "url-list") {
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auto lines = event.data().split_view('\n');
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if (lines.is_empty())
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return;
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if (lines.size() > 1) {
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GMessageBox::show("QuickShow can only open one file at a time!", "One at a time please!", GMessageBox::Type::Error, GMessageBox::InputType::OK, window());
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return;
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}
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URL url(lines[0]);
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auto bitmap = GraphicsBitmap::load_from_file(url.path());
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if (!bitmap) {
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GMessageBox::show(String::format("Failed to open %s", url.to_string().characters()), "Cannot open image", GMessageBox::Type::Error, GMessageBox::InputType::OK, window());
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return;
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}
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m_path = url.path();
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m_bitmap = bitmap;
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m_scale = 100;
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if (on_scale_change)
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on_scale_change(m_scale);
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relayout();
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m_bitmap_rect.center_within(rect());
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}
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}
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