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/*
==============================================================================
This file is part of the JUCE examples.
Copyright (c) 2017 - ROLI Ltd.
The code included in this file is provided under the terms of the ISC license
http://www.isc.org/downloads/software-support-policy/isc-license. Permission
To use, copy, modify, and/or distribute this software for any purpose with or
without fee is hereby granted provided that the above copyright notice and
this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES,
WHETHER EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR
PURPOSE, ARE DISCLAIMED.
==============================================================================
*/
/*******************************************************************************
The block below describes the properties of this PIP. A PIP is a short snippet
of code that can be read by the Projucer and used to generate a JUCE project.
BEGIN_JUCE_PIP_METADATA
name: ImagesDemo
version: 1.0.0
vendor: JUCE
website: http://juce.com
description: Displays image files.
dependencies: juce_core, juce_data_structures, juce_events, juce_graphics,
juce_gui_basics
exporters: xcode_mac, vs2017, linux_make, androidstudio, xcode_iphone
moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
type: Component
mainClass: ImagesDemo
useLocalCopy: 1
END_JUCE_PIP_METADATA
*******************************************************************************/
#pragma once
#include "../Assets/DemoUtilities.h"
//==============================================================================
class ImagesDemo : public Component,
public FileBrowserListener
{
public:
ImagesDemo()
{
setOpaque (true);
imageList.setDirectory (File::getSpecialLocation (File::userPicturesDirectory), true, true);
directoryThread.startThread (1);
fileTree.addListener (this);
fileTree.setColour (TreeView::backgroundColourId, Colours::grey);
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
setSize (500, 500);
}
~ImagesDemo()
{
fileTree.removeListener (this);
}
void paint (Graphics& g) override
{
g.fillAll (Colours::white);
}
void resized() override
{
auto 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 { "*.jpeg;*.jpg;*.png;*.gif", "*", "Image File Filter"};
TimeSliceThread directoryThread { "Image File Scanner Thread" };
DirectoryContentsList imageList { &imagesWildcardFilter, directoryThread };
FileTreeComponent fileTree { imageList };
ImageComponent imagePreview;
StretchableLayoutManager stretchableManager;
StretchableLayoutResizerBar resizerBar { &stretchableManager, 1, false };
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
auto 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)
};
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