summaryrefslogtreecommitdiff
path: root/dggui/widget.h
diff options
context:
space:
mode:
authorBent Bisballe Nyeng <deva@aasimon.org>2020-12-29 16:09:43 +0100
committerBent Bisballe Nyeng <deva@aasimon.org>2020-12-29 16:39:54 +0100
commit645250e1cd8ce9bc1faea599df7a1b05836bfeb8 (patch)
treec6311afab3900d2dd2aecbfbe1ac348d0e48c428 /dggui/widget.h
parentdce64999d3325c5b55499d6ba657066efa48fbff (diff)
Split UI code into application/plugin UI and UI library.
Diffstat (limited to 'dggui/widget.h')
-rw-r--r--dggui/widget.h139
1 files changed, 139 insertions, 0 deletions
diff --git a/dggui/widget.h b/dggui/widget.h
new file mode 100644
index 0000000..b9436b7
--- /dev/null
+++ b/dggui/widget.h
@@ -0,0 +1,139 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * widget.h
+ *
+ * Sun Oct 9 13:01:44 CEST 2011
+ * Copyright 2011 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#pragma once
+
+#include "guievent.h"
+#include "pixelbuffer.h"
+#include "notifier.h"
+#include "layout.h"
+#include "canvas.h"
+
+#include <vector>
+
+namespace GUI
+{
+
+struct Point
+{
+ int x;
+ int y;
+};
+
+struct Size
+{
+ std::size_t width;
+ std::size_t height;
+};
+
+class ImageCache;
+class Window;
+
+class Widget
+ : public Listener
+ , public LayoutItem
+ , public Canvas
+{
+ friend class Painter;
+public:
+ Widget(Widget* parent);
+ virtual ~Widget();
+
+ virtual void show();
+ virtual void hide();
+ void setVisible(bool visible);
+ virtual bool visible() const;
+
+ //! Mark widget dirty and shedule redraw on next window redraw.
+ void redraw();
+
+ // From LayoutItem
+ virtual void resize(std::size_t width, std::size_t height) override;
+ virtual void move(int x, int y) override;
+ virtual int x() const override;
+ virtual int y() const override;
+ virtual std::size_t width() const override;
+ virtual std::size_t height() const override;
+
+ Point position() const;
+
+ // From Canvas
+ PixelBufferAlpha& getPixelBuffer() override;
+
+ virtual bool isFocusable() { return false; }
+ virtual bool catchMouse() { return false; }
+
+ void addChild(Widget* widget);
+ void removeChild(Widget* widget);
+ void reparent(Widget* parent);
+
+ virtual void repaintEvent(RepaintEvent* repaintEvent) {}
+ virtual void mouseMoveEvent(MouseMoveEvent* mouseMoveEvent) {}
+ virtual void buttonEvent(ButtonEvent* buttonEvent) {}
+ virtual void scrollEvent(ScrollEvent* scrollEvent) {}
+ virtual void keyEvent(KeyEvent* keyEvent) {}
+ virtual void mouseLeaveEvent() {}
+ virtual void mouseEnterEvent() {}
+
+ virtual ImageCache& getImageCache();
+
+ Widget* find(int x, int y);
+
+ virtual Window* window();
+
+ std::vector<PixelBufferAlpha*> getPixelBuffers();
+
+ bool hasKeyboardFocus();
+
+ Notifier<std::size_t, std::size_t> sizeChangeNotifier; // (width, height)
+ Notifier<int, int> positionChangeNotifier; // (x, y)
+
+ //! Translate x-coordinate from parent-space to window-space.
+ virtual std::size_t translateToWindowX();
+
+ //! Translate y-coordinate from parent-space to window-space.
+ virtual std::size_t translateToWindowY();
+
+protected:
+ friend class EventHandler;
+ PixelBufferAlpha pixbuf{0,0};
+
+ std::vector<Widget*> children;
+
+ Widget* parent = nullptr;
+ Window* _window = nullptr;
+
+ int _x{0};
+ int _y{0};
+ std::size_t _width{0};
+ std::size_t _height{0};
+
+ bool _visible{true};
+
+ bool dirty{true};
+};
+
+} // GUI::