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VisualBuilder: Use real GWidgets instead of pretend VBWidgets.
That first design was the wrong idea. Instead, have VBWidget instantiate a GWidget of the appropriate type and parent it to the VBForm. We then use a new "greedy hit-testing" mechanism in GWidget to prevent any mouse events from reaching the VBForm's children. To paint the grabbers above the child widgets, I added a slightly hackish but kind of neat second_paint_event() that is called after a widget has painted all of his children. :^)
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12 changed files with 94 additions and 87 deletions
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@ -56,6 +56,9 @@ public:
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virtual void leave_event(CEvent&);
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virtual void child_event(CChildEvent&) override;
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// This is called after children have been painted.
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virtual void second_paint_event(GPaintEvent&);
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Rect relative_rect() const { return m_relative_rect; }
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Point relative_position() const { return m_relative_rect.location(); }
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@ -147,6 +150,9 @@ public:
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bool spans_entire_window_horizontally() const;
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bool is_greedy_for_hits() const { return m_greedy_for_hits; }
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void set_greedy_for_hits(bool b) { m_greedy_for_hits = b; }
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private:
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virtual bool is_widget() const final { return true; }
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@ -173,6 +179,7 @@ private:
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bool m_fill_with_background_color { false };
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bool m_visible { true };
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bool m_greedy_for_hits { false };
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CElapsedTimer m_click_clock;
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};
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