rework custom widget welding to enable inheritence

Change-Id: I0d391b3fe9d2d610ae41e2a03cd2e195a866e103
Reviewed-on: https://gerrit.libreoffice.org/54681
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/include/vcl/customweld.hxx b/include/vcl/customweld.hxx
new file mode 100644
index 000000000000..4eef04e85323
--- /dev/null
+++ b/include/vcl/customweld.hxx
@@ -0,0 +1,100 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_CUSTOMWELD_HXX
+#define INCLUDED_VCL_CUSTOMWELD_HXX
+
+#include <vcl/weld.hxx>
+
+namespace weld
+{
+class VCL_DLLPUBLIC CustomWidgetController
+{
+private:
+    Size m_aSize;
+    weld::DrawingArea* m_pDrawingArea;
+
+public:
+    virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) = 0;
+    virtual void Resize() {}
+    virtual void MouseButtonDown(const MouseEvent&) {}
+    virtual void MouseMove(const MouseEvent&) {}
+    virtual void MouseButtonUp(const MouseEvent&) {}
+    virtual void GetFocus() {}
+    virtual void LoseFocus() {}
+    virtual void StyleUpdated() { Invalidate(); }
+    virtual bool KeyInput(const KeyEvent&) { return false; }
+    virtual css::uno::Reference<css::accessibility::XAccessible> CreateAccessible()
+    {
+        return css::uno::Reference<css::accessibility::XAccessible>();
+    }
+    virtual tools::Rectangle GetFocusRect() { return tools::Rectangle(); }
+    virtual FactoryFunction GetUITestFactory() const { return nullptr; }
+    Size GetOutputSizePixel() const { return m_aSize; }
+    void SetOutputSizePixel(const Size& rSize) { m_aSize = rSize; }
+    virtual void SetDrawingArea(weld::DrawingArea* pDrawingArea) { m_pDrawingArea = pDrawingArea; }
+    weld::DrawingArea* GetDrawingArea() const { return m_pDrawingArea; }
+    void Invalidate() { m_pDrawingArea->queue_draw(); }
+    void Invalidate(const tools::Rectangle& rRect)
+    {
+        m_pDrawingArea->queue_draw_area(rRect.Left(), rRect.Top(), rRect.GetWidth(),
+                                        rRect.GetHeight());
+    }
+    void Show() { m_pDrawingArea->show(); }
+    void Hide() { m_pDrawingArea->hide(); }
+    void GrabFocus() { m_pDrawingArea->grab_focus(); }
+    bool HasFocus() const { return m_pDrawingArea->has_focus(); }
+    bool IsVisible() const { return m_pDrawingArea->get_visible(); }
+    bool IsEnabled() const { return m_pDrawingArea->get_sensitive(); }
+    void grab_add() { m_pDrawingArea->grab_add(); }
+    void grab_remove() { m_pDrawingArea->grab_remove(); }
+    void set_size_request(int nWidth, int nHeight)
+    {
+        m_pDrawingArea->set_size_request(nWidth, nHeight);
+    }
+    virtual ~CustomWidgetController();
+};
+
+class VCL_DLLPUBLIC CustomWeld
+{
+private:
+    weld::CustomWidgetController& m_rWidgetController;
+    std::unique_ptr<weld::DrawingArea> m_xDrawingArea;
+
+    DECL_LINK(DoResize, const Size& rSize, void);
+    DECL_LINK(DoPaint, weld::DrawingArea::draw_args, void);
+    DECL_LINK(DoMouseButtonDown, const MouseEvent&, void);
+    DECL_LINK(DoMouseMove, const MouseEvent&, void);
+    DECL_LINK(DoMouseButtonUp, const MouseEvent&, void);
+    DECL_LINK(DoGetFocus, weld::Widget&, void);
+    DECL_LINK(DoLoseFocus, weld::Widget&, void);
+    DECL_LINK(DoKeyPress, const KeyEvent&, bool);
+    DECL_LINK(DoFocusRect, weld::Widget&, tools::Rectangle);
+    DECL_LINK(DoStyleUpdated, weld::Widget&, void);
+
+public:
+    CustomWeld(weld::Builder& rBuilder, const OString& rDrawingId,
+               CustomWidgetController& rWidgetController);
+    void queue_draw() { m_xDrawingArea->queue_draw(); }
+    void queue_draw_area(int x, int y, int width, int height)
+    {
+        m_xDrawingArea->queue_draw_area(x, y, width, height);
+    }
+    void set_size_request(int nWidth, int nHeight)
+    {
+        m_xDrawingArea->set_size_request(nWidth, nHeight);
+    }
+    void show() { m_xDrawingArea->show(); }
+    void set_margin_top(int nMargin) { m_xDrawingArea->set_margin_top(nMargin); }
+    void set_margin_bottom(int nMargin) { m_xDrawingArea->set_margin_bottom(nMargin); }
+};
+}
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */