- clean working copy for leaving SVN

2022-06-28 19:04:46 +02:00
parent 62a2d47cb3
commit 762b8f0e7d
1966 changed files with 699872 additions and 126 deletions
@@ -0,0 +1,122 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library - "Jules' Utility Class Extensions"
+   Copyright 2004-12 by Raw Material Software Ltd.
+
+  ------------------------------------------------------------------------------
+
+   JUCE can be redistributed and/or modified under the terms of the GNU General
+   Public License (Version 2), as published by the Free Software Foundation.
+   A copy of the license is included in the JUCE distribution, or can be found
+   online at www.gnu.org/licenses.
+
+   JUCE 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.
+
+  ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.rawmaterialsoftware.com/juce for more information.
+
+  ==============================================================================
+*/
+
+#include "../JuceDemoHeader.h"
+
+//==============================================================================
+class ImagesDemo  : public Component,
+                    public FileBrowserListener
+{
+public:
+    ImagesDemo()
+        : imagesWildcardFilter ("*.jpeg;*.jpg;*.png;*.gif", "*", "Image File Filter"),
+          directoryThread ("Image File Scanner Thread"),
+          imageList (&imagesWildcardFilter, directoryThread),
+          fileTree (imageList),
+          resizerBar (&stretchableManager, 1, false)
+    {
+        setOpaque (true);
+        imageList.setDirectory (File::getSpecialLocation (File::userPicturesDirectory), true, true);
+        directoryThread.startThread (1);
+
+        fileTree.addListener (this);
+        fileTree.setColour (TreeView::backgroundColourId, Colours::lightgrey.withAlpha (0.6f));
+        addAndMakeVisible (fileTree);
+
+        addAndMakeVisible (resizerBar);
+
+        addAndMakeVisible (imagePreview);
+
+        // we have to set up our StretchableLayoutManager so it know the limits and preferred sizes of it's contents
+        stretchableManager.setItemLayout (0,            // for the fileTree
+                                          -0.1, -0.9,   // must be between 50 pixels and 90% of the available space
+                                          -0.3);        // and its preferred size is 30% of the total available space
+
+        stretchableManager.setItemLayout (1,            // for the resize bar
+                                          5, 5, 5);     // hard limit to 5 pixels
+
+        stretchableManager.setItemLayout (2,            // for the imagePreview
+                                          -0.1, -0.9,   // size must be between 50 pixels and 90% of the available space
+                                          -0.7);        // and its preferred size is 70% of the total available space
+    }
+
+    ~ImagesDemo()
+    {
+        fileTree.removeListener (this);
+    }
+
+    void paint (Graphics& g) override
+    {
+        fillTiledBackground (g);
+    }
+
+    void resized() override
+    {
+        Rectangle<int> r (getLocalBounds().reduced (4));
+
+        // make a list of two of our child components that we want to reposition
+        Component* comps[] = { &fileTree, &resizerBar, &imagePreview };
+
+        // this will position the 3 components, one above the other, to fit
+        // vertically into the rectangle provided.
+        stretchableManager.layOutComponents (comps, 3,
+                                             r.getX(), r.getY(), r.getWidth(), r.getHeight(),
+                                             true, true);
+    }
+
+private:
+    WildcardFileFilter imagesWildcardFilter;
+    TimeSliceThread directoryThread;
+    DirectoryContentsList imageList;
+    FileTreeComponent fileTree;
+
+    ImageComponent imagePreview;
+
+    StretchableLayoutManager stretchableManager;
+    StretchableLayoutResizerBar resizerBar;
+
+    void selectionChanged() override
+    {
+        // we're only really interested in when the selection changes, regardless of if it was
+        // clicked or not so we'll only override this method
+        const File selectedFile (fileTree.getSelectedFile());
+
+        if (selectedFile.existsAsFile())
+            imagePreview.setImage (ImageCache::getFromFile (selectedFile));
+
+        // the image cahce is a handly way to load images from files or directly from memory and
+        // will keep them hanging around for a few seconds in case they are requested elsewhere
+    }
+
+    void fileClicked (const File&, const MouseEvent&) override {}
+    void fileDoubleClicked (const File&) override {}
+    void browserRootChanged (const File&) override {}
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ImagesDemo)
+};
+
+
+// This static object will register this demo type in a global list of demos..
+static JuceDemoType<ImagesDemo> demo ("20 Graphics: Image formats");