1 files changed, 233 insertions, 0 deletions
diff --git a/digikam/utilities/imageeditor/editor/editorstackview.cpp b/digikam/utilities/imageeditor/editor/editorstackview.cpp
new file mode 100644
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+++ b/digikam/utilities/imageeditor/editor/editorstackview.cpp
@@ -0,0 +1,233 @@
+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2008-08-20
+ * Description : A widget stack to embed editor view.
+ *
+ * Copyright (C) 2008 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ *
+ * 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, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * ============================================================ */
+
+// Local includes.
+
+#include "previewwidget.h"
+#include "imageregionwidget.h"
+#include "imagepanelwidget.h"
+#include "canvas.h"
+#include "editorstackview.h"
+#include "editorstackview.moc"
+
+namespace Digikam
+{
+
+class EditorStackViewPriv
+{
+
+public:
+
+    EditorStackViewPriv()
+    {
+        canvas   = 0;
+        toolView = 0;
+    }
+
+    QWidget *toolView;
+    Canvas  *canvas;
+};
+
+EditorStackView::EditorStackView(QWidget *parent)
+               : QWidgetStack(parent, 0, Qt::WDestructiveClose)
+{
+    d = new EditorStackViewPriv;
+}
+
+EditorStackView::~EditorStackView()
+{
+    delete d;
+}
+
+void EditorStackView::setCanvas(Canvas* canvas)
+{
+    if (d->canvas) return;
+
+    d->canvas = canvas;
+    addWidget(d->canvas, CanvasMode);
+
+    connect(d->canvas, SIGNAL(signalZoomChanged(double)),
+            this, SLOT(slotZoomChanged(double)));
+}
+
+Canvas* EditorStackView::canvas() const
+{
+    return d->canvas;
+}
+
+void EditorStackView::setToolView(QWidget* view)
+{
+    if (d->toolView)
+        removeWidget(d->toolView);
+
+    d->toolView = view;
+
+    if (d->toolView)
+        addWidget(d->toolView, ToolViewMode);
+
+    PreviewWidget *preview = previewWidget();
+    if (preview)
+    {
+        connect(preview, SIGNAL(signalZoomFactorChanged(double)),
+                this, SLOT(slotZoomChanged(double)));
+    }
+}
+
+QWidget* EditorStackView::toolView() const
+{
+    return d->toolView;
+}
+
+int EditorStackView::viewMode()
+{
+    return id(visibleWidget());
+}
+
+void EditorStackView::setViewMode(int mode)
+{
+    if (mode != CanvasMode && mode != ToolViewMode)
+        return;
+
+    raiseWidget(mode);
+}
+
+void EditorStackView::increaseZoom()
+{
+    if (viewMode() == CanvasMode)
+    {
+        d->canvas->slotIncreaseZoom();
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+            preview->slotIncreaseZoom();
+    }
+}
+
+void EditorStackView::decreaseZoom()
+{
+    if (viewMode() == CanvasMode)
+    {
+        d->canvas->slotDecreaseZoom();
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+            preview->slotDecreaseZoom();
+    }
+}
+
+void EditorStackView::toggleFitToWindow()
+{
+    if (viewMode() == CanvasMode)
+    {
+        d->canvas->toggleFitToWindow();
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+            preview->toggleFitToWindow();
+    }
+}
+
+void EditorStackView::fitToSelect()
+{
+    if (viewMode() == CanvasMode)
+    {
+        d->canvas->fitToSelect();
+    }
+}
+
+void EditorStackView::zoomTo100Percents()
+{
+    if (viewMode() == CanvasMode)
+    {
+        if (d->canvas->zoomFactor() == 1.0)
+            d->canvas->toggleFitToWindow();
+        else
+            d->canvas->setZoomFactor(1.0);
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+        {
+            if (preview->zoomFactor() == 1.0)
+                preview->toggleFitToWindow();
+            else
+                preview->setZoomFactor(1.0);
+        }
+    }
+}
+
+void EditorStackView::setZoomFactor(double zoom)
+{
+    if (viewMode() == CanvasMode)
+    {
+        d->canvas->setZoomFactor(zoom);
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+            preview->setZoomFactor(zoom);
+    }
+}
+
+void EditorStackView::slotZoomChanged(double zoom)
+{
+    bool max, min;
+
+    if (viewMode() == CanvasMode)
+    {
+        max = d->canvas->maxZoom();
+        min = d->canvas->minZoom();
+        emit signalZoomChanged(max, min, zoom);
+    }
+    else
+    {
+        PreviewWidget *preview = previewWidget();
+        if (preview)
+        {
+            max = preview->maxZoom();
+            min = preview->minZoom();
+            emit signalZoomChanged(max, min, zoom);
+        }
+    }
+}
+
+PreviewWidget* EditorStackView::previewWidget() const
+{
+    PreviewWidget *preview = dynamic_cast<PreviewWidget*>(d->toolView);
+    if (preview) return preview;
+
+    ImagePanelWidget *panel = dynamic_cast<ImagePanelWidget*>(d->toolView);
+    if (panel) return (dynamic_cast<PreviewWidget*>(panel->previewWidget()));
+
+    return 0;
+}
+
+}  // namespace Digikam