Theme Editor: Created the RBMovable abstract class for screen elements that can be moved around, began implementing it and making images, viewports, and album art children of it

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27685 a1c6a512-1295-4272-9138-f99709370657

utils/themeeditor/graphics/rbalbumart.cpp

@@ -22,17 +22,17 @@
 #include "rbalbumart.h"
 
 #include <QPainter>
-#include <QDebug>
 
 RBAlbumArt::RBAlbumArt(QGraphicsItem *parent, int x, int y, int maxWidth,
                        int maxHeight, int artWidth, int artHeight, char hAlign,
                        char vAlign)
-                           : QGraphicsItem(parent), size(x, y, maxWidth,
-                                                         maxHeight),
+                           : RBMovable(parent), size(0, 0, maxWidth,
+                                                     maxHeight),
                            artWidth(artWidth), artHeight(artHeight),
                            hAlign(hAlign), vAlign(vAlign),
                            texture(":/render/albumart.png")
 {
+    setPos(x, y);
     hide();
 }
 
@@ -92,4 +92,11 @@ void RBAlbumArt::paint(QPainter *painter,
     }
 
     painter->fillRect(drawArea, texture);
+
+    RBMovable::paint(painter, option, widget);
+}
+
+void RBAlbumArt::saveGeometry()
+{
+
 }

utils/themeeditor/graphics/rbalbumart.h

@@ -24,7 +24,9 @@
 
 #include <QGraphicsItem>
 
-class RBAlbumArt : public QGraphicsItem
+#include "rbmovable.h"
+
+class RBAlbumArt : public RBMovable
 {
 public:
     RBAlbumArt(QGraphicsItem* parent, int x, int y, int maxWidth, int maxHeight,
@@ -37,6 +39,9 @@ public:
 
     void position(){ this->setPos(size.x(), size.y()); }
 
+protected:
+    void saveGeometry();
+
 private:
     QRectF size;
     int artWidth;

utils/themeeditor/graphics/rbimage.cpp

@@ -26,7 +26,7 @@
 #include "rbimage.h"
 
 RBImage::RBImage(QString file, int tiles, int x, int y, QGraphicsItem* parent)
-                     : QGraphicsItem(parent), tiles(tiles), currentTile(0)
+                     : RBMovable(parent), tiles(tiles), currentTile(0)
 {
     if(QFile::exists(file))
     {
@@ -56,7 +56,7 @@ RBImage::RBImage(QString file, int tiles, int x, int y, QGraphicsItem* parent)
 }
 
 RBImage::RBImage(const RBImage &other, QGraphicsItem* parent)
-    : QGraphicsItem(parent), tiles(other.tiles), currentTile(other.currentTile)
+    : RBMovable(parent), tiles(other.tiles), currentTile(other.currentTile)
 {
     if(other.image)
         image = new QPixmap(*(other.image));
@@ -86,4 +86,11 @@ void RBImage::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
     painter->drawPixmap(size, *image, QRect(0, currentTile * image->height()
                                             / tiles, image->width(),
                                             image->height() / tiles));
+
+    RBMovable::paint(painter, option, widget);
+}
+
+void RBImage::saveGeometry()
+{
+
 }

utils/themeeditor/graphics/rbimage.h

@@ -25,7 +25,9 @@
 #include <QPixmap>
 #include <QGraphicsItem>
 
-class RBImage: public QGraphicsItem
+#include "rbmovable.h"
+
+class RBImage: public RBMovable
 {
 public:
     RBImage(QString file, int tiles, int x, int y, QGraphicsItem* parent = 0);
@@ -44,6 +46,9 @@ public:
     }
 
 
+protected:
+    void saveGeometry();
+
 private:
     QPixmap* image;
     int tiles;

utils/themeeditor/graphics/rbmovable.cpp

@@ -0,0 +1,71 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Robert Bieber
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <QPainter>
+#include <QDebug>
+
+#include "rbmovable.h"
+
+RBMovable::RBMovable(QGraphicsItem* parent)
+    : QGraphicsItem(parent)
+{
+    setFlags(ItemIsMovable | ItemIsSelectable | ItemSendsGeometryChanges);
+}
+
+RBMovable::~RBMovable()
+{
+}
+
+void RBMovable::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
+                      QWidget *widget)
+{
+    if(isSelected())
+    {
+        painter->setBrush(Qt::NoBrush);
+        QPen pen;
+        pen.setStyle(Qt::DashLine);
+        pen.setColor(Qt::green);
+        painter->setPen(pen);
+        painter->drawRect(boundingRect());
+    }
+}
+
+QVariant RBMovable::itemChange(GraphicsItemChange change, const QVariant &value)
+{
+    if(change == ItemPositionChange)
+    {
+        QPointF pos = value.toPointF();
+        QRectF bound = parentItem()->boundingRect();
+
+        pos.setX(qMax(0., pos.x()));
+        pos.setX(qMin(pos.x(), bound.width() - boundingRect().width()));
+
+        pos.setY(qMax(0., pos.y()));
+        pos.setY(qMin(pos.y(), bound.height() - boundingRect().height()));
+
+        saveGeometry();
+
+        return pos;
+    }
+
+    return QGraphicsItem::itemChange(change, value);
+}
+

utils/themeeditor/graphics/rbmovable.h

@@ -0,0 +1,53 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2010 Robert Bieber
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef RBMOVABLE_H
+#define RBMOVABLE_H
+
+#include <QGraphicsItem>
+
+/*
+ * This is a base class for scene elements that can be moved around and
+ * resized. It adds some basic functionality for showing a border around
+ * selected items and ensuring that they don't get moved out of their parent's
+ * bounding rect, as well as resizing them. It includes one pure virtual
+ * function, saveGeometry(), that is responsible for syncing the changed
+ * geometry back to the parse tree to be code gen'd into the file.
+ */
+
+class RBMovable : public QGraphicsItem
+{
+public:
+    RBMovable(QGraphicsItem* parent);
+    ~RBMovable();
+
+    virtual void paint(QPainter *painter,
+                       const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+protected:
+    virtual QVariant itemChange(GraphicsItemChange change,
+                                const QVariant &value);
+    /* Responsible for updating the parse tree */
+    virtual void saveGeometry() = 0;
+
+};
+
+#endif // RBMOVABLE_H

utils/themeeditor/graphics/rbscreen.h

@@ -81,7 +81,6 @@ public:
         if(albumArt)
         {
             albumArt->setParentItem(view);
-            albumArt->position();
             albumArt->show();
         }
     }

utils/themeeditor/graphics/rbviewport.cpp

@@ -39,7 +39,7 @@
 const double RBViewport::scrollRate = 30;
 
 RBViewport::RBViewport(skin_element* node, const RBRenderInfo& info)
-    : QGraphicsItem(info.screen()), foreground(info.screen()->foreground()),
+    : RBMovable(info.screen()), foreground(info.screen()->foreground()),
     background(info.screen()->background()), textOffset(0,0),
     screen(info.screen()), textAlign(Left), showStatusBar(false),
     statusBarTexture(":/render/statusbar.png"),
@@ -178,6 +178,8 @@ void RBViewport::paint(QPainter *painter,
 
     if(showStatusBar)
         painter->fillRect(QRectF(0, 0, size.width(), 8), statusBarTexture);
+
+    RBMovable::paint(painter, option, widget);
 }
 
 void RBViewport::newLine()
@@ -297,24 +299,9 @@ void RBViewport::showPlaylist(const RBRenderInfo &info, int start,
     }
 }
 
-QVariant RBViewport::itemChange(GraphicsItemChange change,
-                                const QVariant &value)
+void RBViewport::saveGeometry()
 {
-    if(change == ItemPositionChange)
-    {
-        QPointF pos = value.toPointF();
-        QRectF bound = parentItem()->boundingRect();
 
-        pos.setX(qMax(0., pos.x()));
-        pos.setX(qMin(pos.x(), bound.width() - boundingRect().width()));
-
-        pos.setY(qMax(0., pos.y()));
-        pos.setY(qMin(pos.y(), bound.height() - boundingRect().height()));
-
-        return pos;
-    }
-
-    return QGraphicsItem::itemChange(change, value);
 }
 
 void RBViewport::alignLeft()

utils/themeeditor/graphics/rbviewport.h

@@ -24,13 +24,14 @@
 
 #include "skin_parser.h"
 #include "rbfont.h"
+#include "rbmovable.h"
 
 class RBScreen;
 class RBRenderInfo;
 
 #include <QGraphicsItem>
 
-class RBViewport : public QGraphicsItem
+class RBViewport : public RBMovable
 {
 public:
     enum Alignment
@@ -78,7 +79,7 @@ public:
                       skin_element* noId3);
 
 protected:
-    QVariant itemChange(GraphicsItemChange change, const QVariant &value);
+    void saveGeometry();
 
 private:
 

utils/themeeditor/themeeditor.pro

@@ -106,7 +106,8 @@ HEADERS += models/parsetreemodel.h \
     qtfindreplacedialog/finddialog.h \
     gui/projectexporter.h \
     gui/targetdownloader.h \
-    gui/syntaxcompleter.h
+    gui/syntaxcompleter.h \
+    graphics/rbmovable.h
 SOURCES += main.cpp \
     models/parsetreemodel.cpp \
     models/parsetreenode.cpp \
@@ -147,7 +148,8 @@ SOURCES += main.cpp \
     qtfindreplacedialog/finddialog.cpp \
     gui/projectexporter.cpp \
     gui/targetdownloader.cpp \
-    gui/syntaxcompleter.cpp
+    gui/syntaxcompleter.cpp \
+    graphics/rbmovable.cpp
 OTHER_FILES += README \
     resources/windowicon.png \
     resources/appicon.xcf \