- added JUCE library code

git-svn-id: http://moon:8086/svn/software/trunk/projects/FsTrack@357 b431acfa-c32f-4a4a-93f1-934dc6c82436
2018-06-12 16:53:56 +00:00
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+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software 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.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_PROGRESSBAR_H_INCLUDED
+#define JUCE_PROGRESSBAR_H_INCLUDED
+
+
+//==============================================================================
+/**
+    A progress bar component.
+
+    To use this, just create one and make it visible. It'll run its own timer
+    to keep an eye on a variable that you give it, and will automatically
+    redraw itself when the variable changes.
+
+    For an easy way of running a background task with a dialog box showing its
+    progress, see the ThreadWithProgressWindow class.
+
+    @see ThreadWithProgressWindow
+*/
+class JUCE_API  ProgressBar  : public Component,
+                               public SettableTooltipClient,
+                               private Timer
+{
+public:
+    //==============================================================================
+    /** Creates a ProgressBar.
+
+        @param progress     pass in a reference to a double that you're going to
+                            update with your task's progress. The ProgressBar will
+                            monitor the value of this variable and will redraw itself
+                            when the value changes. The range is from 0 to 1.0. Obviously
+                            you'd better be careful not to delete this variable while the
+                            ProgressBar still exists!
+    */
+    explicit ProgressBar (double& progress);
+
+    /** Destructor. */
+    ~ProgressBar();
+
+    //==============================================================================
+    /** Turns the percentage display on or off.
+
+        By default this is on, and the progress bar will display a text string showing
+        its current percentage.
+    */
+    void setPercentageDisplay (bool shouldDisplayPercentage);
+
+    /** Gives the progress bar a string to display inside it.
+
+        If you call this, it will turn off the percentage display.
+        @see setPercentageDisplay
+    */
+    void setTextToDisplay (const String& text);
+
+
+    //==============================================================================
+    /** A set of colour IDs to use to change the colour of various aspects of the bar.
+
+        These constants can be used either via the Component::setColour(), or LookAndFeel::setColour()
+        methods.
+
+        @see Component::setColour, Component::findColour, LookAndFeel::setColour, LookAndFeel::findColour
+    */
+    enum ColourIds
+    {
+        backgroundColourId              = 0x1001900,    /**< The background colour, behind the bar. */
+        foregroundColourId              = 0x1001a00,    /**< The colour to use to draw the bar itself. LookAndFeel
+                                                             classes will probably use variations on this colour. */
+    };
+
+    //==============================================================================
+    /** This abstract base class is implemented by LookAndFeel classes. */
+    struct JUCE_API  LookAndFeelMethods
+    {
+        virtual ~LookAndFeelMethods() {}
+
+        /** Draws a progress bar.
+
+            If the progress value is less than 0 or greater than 1.0, this should draw a spinning
+            bar that fills the whole space (i.e. to say that the app is still busy but the progress
+            isn't known). It can use the current time as a basis for playing an animation.
+
+            (Used by progress bars in AlertWindow).
+        */
+        virtual void drawProgressBar (Graphics&, ProgressBar&, int width, int height,
+                                      double progress, const String& textToShow) = 0;
+    };
+
+protected:
+    //==============================================================================
+    /** @internal */
+    void paint (Graphics&) override;
+    /** @internal */
+    void lookAndFeelChanged() override;
+    /** @internal */
+    void visibilityChanged() override;
+    /** @internal */
+    void colourChanged() override;
+
+private:
+    double& progress;
+    double currentValue;
+    bool displayPercentage;
+    String displayedMessage, currentMessage;
+    uint32 lastCallbackTime;
+
+    void timerCallback() override;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProgressBar)
+};
+
+
+#endif   // JUCE_PROGRESSBAR_H_INCLUDED