a7f414bba7
This patch enables basic drag&drop between applications. You initiate a drag by creating a GDragOperation object and calling exec() on it. This creates a nested event loop in the calling program that only returns once the drag operation has ended. On the receiving side, you get a call to GWidget::drop_event() with a GDropEvent containing information about the dropped data. The only data passed right now is a piece of text that's also used to visually indicate that a drag is happening (by showing the text in a little box that follows the mouse cursor around.) There are things to fix here, but we're off to a nice start. :^)
50 lines
1.5 KiB
C++
50 lines
1.5 KiB
C++
#pragma once
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#include <AK/Function.h>
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#include <AK/HashMap.h>
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#include <LibGUI/GAbstractView.h>
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#include <LibGUI/GModel.h>
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class GScrollBar;
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class Painter;
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class GItemView : public GAbstractView {
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C_OBJECT(GItemView)
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public:
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virtual ~GItemView() override;
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int content_width() const;
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int horizontal_padding() const { return m_horizontal_padding; }
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void scroll_into_view(const GModelIndex&, Orientation);
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Size effective_item_size() const { return m_effective_item_size; }
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int model_column() const { return m_model_column; }
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void set_model_column(int column) { m_model_column = column; }
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private:
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explicit GItemView(GWidget* parent);
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virtual void did_update_model() override;
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virtual void paint_event(GPaintEvent&) override;
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virtual void resize_event(GResizeEvent&) override;
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virtual void mousedown_event(GMouseEvent&) override;
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virtual void mousemove_event(GMouseEvent&) override;
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virtual void keydown_event(GKeyEvent&) override;
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virtual void doubleclick_event(GMouseEvent&) override;
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virtual void context_menu_event(GContextMenuEvent&) override;
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int item_count() const;
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Rect item_rect(int item_index) const;
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int item_at_event_position(const Point&) const;
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void update_content_size();
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int m_horizontal_padding { 5 };
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int m_model_column { 0 };
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int m_visual_column_count { 0 };
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int m_visual_row_count { 0 };
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Point m_left_mousedown_position;
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Size m_effective_item_size { 80, 80 };
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};
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