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tags/2021-05-28
jules 9 years ago
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      examples/Demo/Source/Demos/VideoDemo.cpp

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examples/Demo/Source/Demos/VideoDemo.cpp View File

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found 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.juce.com for more information.
==============================================================================
*/
#include "../JuceDemoHeader.h"
#if JUCE_QUICKTIME || JUCE_DIRECTSHOW
//==============================================================================
// so that we can easily have two video windows each with a file browser, wrap this up as a class..
class MovieComponentWithFileBrowser : public Component,
public DragAndDropTarget,
private FilenameComponentListener
{
public:
MovieComponentWithFileBrowser()
: isDragOver (false),
fileChooser ("movie", File::nonexistent, true, false, false,
"*", String::empty, "(choose a video file to play)")
{
addAndMakeVisible (videoComp);
addAndMakeVisible (fileChooser);
fileChooser.addListener (this);
fileChooser.setBrowseButtonText ("browse");
}
void setFile (const File& file)
{
fileChooser.setCurrentFile (file, true);
}
void paintOverChildren (Graphics& g)
{
if (isDragOver)
{
g.setColour (Colours::red);
g.drawRect (fileChooser.getBounds(), 2);
}
}
void resized()
{
videoComp.setBoundsWithCorrectAspectRatio (Rectangle<int> (0, 0, getWidth(), getHeight() - 30),
Justification::centred);
fileChooser.setBounds (0, getHeight() - 24, getWidth(), 24);
}
bool isInterestedInDragSource (const SourceDetails&) { return true; }
void itemDragEnter (const SourceDetails&)
{
isDragOver = true;
repaint();
}
void itemDragExit (const SourceDetails&)
{
isDragOver = false;
repaint();
}
void itemDropped (const SourceDetails& dragSourceDetails)
{
setFile (dragSourceDetails.description.toString());
isDragOver = false;
repaint();
}
private:
#if JUCE_QUICKTIME
QuickTimeMovieComponent videoComp;
#elif JUCE_DIRECTSHOW
DirectShowComponent videoComp;
#endif
bool isDragOver;
FilenameComponent fileChooser;
void filenameComponentChanged (FilenameComponent*) override
{
// this is called when the user changes the filename in the file chooser box
#if JUCE_QUICKTIME
if (videoComp.loadMovie (fileChooser.getCurrentFile(), true))
#elif JUCE_DIRECTSHOW
if (videoComp.loadMovie (fileChooser.getCurrentFile()))
#endif
{
// loaded the file ok, so let's start it playing..
videoComp.play();
resized(); // update to reflect the video's aspect ratio
}
else
{
AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
"Couldn't load the file!",
r.getErrorMessage());
}
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MovieComponentWithFileBrowser)
};
//==============================================================================
class VideoDemo : public Component,
public DragAndDropContainer,
private Button::Listener,
private FileBrowserListener
{
public:
VideoDemo()
: moviesWildcardFilter ("*", "*", "Movies File Filter"),
directoryThread ("Movie File Scanner Thread"),
movieList (&moviesWildcardFilter, directoryThread),
fileTree (movieList),
resizerBar (&stretchableManager, 1, false)
{
setOpaque (true);
movieList.setDirectory (File::getSpecialLocation (File::userMoviesDirectory), true, true);
directoryThread.startThread (1);
fileTree.addListener (this);
fileTree.setColour (TreeView::backgroundColourId, Colours::lightgrey);
addAndMakeVisible (fileTree);
addAndMakeVisible (resizerBar);
loadLeftButton.setButtonText ("Load Left");
loadRightButton.setButtonText ("Load Right");
loadLeftButton.addListener (this);
loadRightButton.addListener (this);
addAndMakeVisible (loadLeftButton);
addAndMakeVisible (loadRightButton);
addAndMakeVisible (movieCompLeft);
addAndMakeVisible (movieCompRight);
// 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 movie components
-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
}
~VideoDemo()
{
loadLeftButton.removeListener (this);
loadRightButton.removeListener (this);
fileTree.removeListener (this);
}
void paint (Graphics& g) override
{
fillStandardDemoBackground (g);
}
void resized() override
{
// make a list of two of our child components that we want to reposition
Component* comps[] = { &fileTree, &resizerBar, nullptr };
// this will position the 3 components, one above the other, to fit
// vertically into the rectangle provided.
stretchableManager.layOutComponents (comps, 3,
0, 0, getWidth(), getHeight(),
true, true);
// now position out two video components in the space that's left
Rectangle<int> area (getLocalBounds().removeFromBottom (getHeight() - resizerBar.getBottom()));
{
Rectangle<int> buttonArea (area.removeFromTop (30));
loadLeftButton.setBounds (buttonArea.removeFromLeft (buttonArea.getWidth() / 2).reduced (5));
loadRightButton.setBounds (buttonArea.reduced (5));
}
movieCompLeft.setBounds (area.removeFromLeft (area.getWidth() / 2).reduced (5));
movieCompRight.setBounds (area.reduced (5));
}
private:
WildcardFileFilter moviesWildcardFilter;
TimeSliceThread directoryThread;
DirectoryContentsList movieList;
FileTreeComponent fileTree;
StretchableLayoutManager stretchableManager;
StretchableLayoutResizerBar resizerBar;
TextButton loadLeftButton, loadRightButton;
MovieComponentWithFileBrowser movieCompLeft, movieCompRight;
void buttonClicked (Button* button) override
{
if (button == &loadLeftButton)
movieCompLeft.setFile (fileTree.getSelectedFile (0));
else if (button == &loadRightButton)
movieCompRight.setFile (fileTree.getSelectedFile (0));
}
void selectionChanged() override
{
// we're just going to update the drag description of out tree so that rows can be dragged onto the file players
fileTree.setDragAndDropDescription (fileTree.getSelectedFile().getFullPathName());
}
void fileClicked (const File&, const MouseEvent&) override {}
void fileDoubleClicked (const File&) override {}
void browserRootChanged (const File&) override {}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (VideoDemo)
};
// This static object will register this demo type in a global list of demos..
static JuceDemoType<VideoDemo> demo ("29 Graphics: Video Playback");
#endif
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found 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.juce.com for more information.
==============================================================================
*/
#include "../JuceDemoHeader.h"
#if JUCE_QUICKTIME || JUCE_DIRECTSHOW
//==============================================================================
// so that we can easily have two video windows each with a file browser, wrap this up as a class..
class MovieComponentWithFileBrowser : public Component,
public DragAndDropTarget,
private FilenameComponentListener
{
public:
MovieComponentWithFileBrowser()
: isDragOver (false),
fileChooser ("movie", File::nonexistent, true, false, false,
"*", String::empty, "(choose a video file to play)")
{
addAndMakeVisible (videoComp);
addAndMakeVisible (fileChooser);
fileChooser.addListener (this);
fileChooser.setBrowseButtonText ("browse");
}
void setFile (const File& file)
{
fileChooser.setCurrentFile (file, true);
}
void paintOverChildren (Graphics& g)
{
if (isDragOver)
{
g.setColour (Colours::red);
g.drawRect (fileChooser.getBounds(), 2);
}
}
void resized()
{
videoComp.setBoundsWithCorrectAspectRatio (Rectangle<int> (0, 0, getWidth(), getHeight() - 30),
Justification::centred);
fileChooser.setBounds (0, getHeight() - 24, getWidth(), 24);
}
bool isInterestedInDragSource (const SourceDetails&) { return true; }
void itemDragEnter (const SourceDetails&)
{
isDragOver = true;
repaint();
}
void itemDragExit (const SourceDetails&)
{
isDragOver = false;
repaint();
}
void itemDropped (const SourceDetails& dragSourceDetails)
{
setFile (dragSourceDetails.description.toString());
isDragOver = false;
repaint();
}
private:
#if JUCE_QUICKTIME
QuickTimeMovieComponent videoComp;
#elif JUCE_DIRECTSHOW
DirectShowComponent videoComp;
#endif
bool isDragOver;
FilenameComponent fileChooser;
void filenameComponentChanged (FilenameComponent*) override
{
// this is called when the user changes the filename in the file chooser box
#if JUCE_QUICKTIME
if (videoComp.loadMovie (fileChooser.getCurrentFile(), true))
#elif JUCE_DIRECTSHOW
if (videoComp.loadMovie (fileChooser.getCurrentFile()))
#endif
{
// loaded the file ok, so let's start it playing..
videoComp.play();
resized(); // update to reflect the video's aspect ratio
}
else
{
AlertWindow::showMessageBoxAsync (AlertWindow::WarningIcon,
"Couldn't load the file!",
r.getErrorMessage());
}
}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MovieComponentWithFileBrowser)
};
//==============================================================================
class VideoDemo : public Component,
public DragAndDropContainer,
private Button::Listener,
private FileBrowserListener
{
public:
VideoDemo()
: moviesWildcardFilter ("*", "*", "Movies File Filter"),
directoryThread ("Movie File Scanner Thread"),
movieList (&moviesWildcardFilter, directoryThread),
fileTree (movieList),
resizerBar (&stretchableManager, 1, false)
{
setOpaque (true);
movieList.setDirectory (File::getSpecialLocation (File::userMoviesDirectory), true, true);
directoryThread.startThread (1);
fileTree.addListener (this);
fileTree.setColour (TreeView::backgroundColourId, Colours::lightgrey);
addAndMakeVisible (fileTree);
addAndMakeVisible (resizerBar);
loadLeftButton.setButtonText ("Load Left");
loadRightButton.setButtonText ("Load Right");
loadLeftButton.addListener (this);
loadRightButton.addListener (this);
addAndMakeVisible (loadLeftButton);
addAndMakeVisible (loadRightButton);
addAndMakeVisible (movieCompLeft);
addAndMakeVisible (movieCompRight);
// 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 movie components
-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
}
~VideoDemo()
{
loadLeftButton.removeListener (this);
loadRightButton.removeListener (this);
fileTree.removeListener (this);
}
void paint (Graphics& g) override
{
fillStandardDemoBackground (g);
}
void resized() override
{
// make a list of two of our child components that we want to reposition
Component* comps[] = { &fileTree, &resizerBar, nullptr };
// this will position the 3 components, one above the other, to fit
// vertically into the rectangle provided.
stretchableManager.layOutComponents (comps, 3,
0, 0, getWidth(), getHeight(),
true, true);
// now position out two video components in the space that's left
Rectangle<int> area (getLocalBounds().removeFromBottom (getHeight() - resizerBar.getBottom()));
{
Rectangle<int> buttonArea (area.removeFromTop (30));
loadLeftButton.setBounds (buttonArea.removeFromLeft (buttonArea.getWidth() / 2).reduced (5));
loadRightButton.setBounds (buttonArea.reduced (5));
}
movieCompLeft.setBounds (area.removeFromLeft (area.getWidth() / 2).reduced (5));
movieCompRight.setBounds (area.reduced (5));
}
private:
WildcardFileFilter moviesWildcardFilter;
TimeSliceThread directoryThread;
DirectoryContentsList movieList;
FileTreeComponent fileTree;
StretchableLayoutManager stretchableManager;
StretchableLayoutResizerBar resizerBar;
TextButton loadLeftButton, loadRightButton;
MovieComponentWithFileBrowser movieCompLeft, movieCompRight;
void buttonClicked (Button* button) override
{
if (button == &loadLeftButton)
movieCompLeft.setFile (fileTree.getSelectedFile (0));
else if (button == &loadRightButton)
movieCompRight.setFile (fileTree.getSelectedFile (0));
}
void selectionChanged() override
{
// we're just going to update the drag description of out tree so that rows can be dragged onto the file players
fileTree.setDragAndDropDescription (fileTree.getSelectedFile().getFullPathName());
}
void fileClicked (const File&, const MouseEvent&) override {}
void fileDoubleClicked (const File&) override {}
void browserRootChanged (const File&) override {}
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (VideoDemo)
};
// This static object will register this demo type in a global list of demos..
static JuceDemoType<VideoDemo> demo ("29 Graphics: Video Playback");
#endif

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