docs/JUCE changelist.txt

@@ -27,6 +27,7 @@ Changelist for version 1.46
 - moved some of the posix code that was the same in the mac and linux builds into a single, shared file
 - fixed InterprocessLock on mac/linux so that it can't get stuck when an app quits unexpectedly
 - added an option to splash screens to close themselves when the mouse is clicked
+- change to ProgressBar to allow custom text and bars that are just spinning without a known progress position. This also meant a change to the params for LookAndFeel::drawProgressBar
 
 ==============================================================================
 Changelist for version 1.45

extras/juce demo/src/BinaryData.h

@@ -6,7 +6,7 @@
 namespace BinaryData
 {
     extern const char*  audiodemo_cpp;
-    const int           audiodemo_cppSize = 23529;
+    const int           audiodemo_cppSize = 23434;
 
     extern const char*  cello_wav;
     const int           cello_wavSize = 46348;
@@ -42,7 +42,7 @@ namespace BinaryData
     const int           readme__what_this_directory_is_for_txtSize = 259;
 
     extern const char*  tabledemo_cpp;
-    const int           tabledemo_cppSize = 12327;
+    const int           tabledemo_cppSize = 12381;
 
     extern const char*  threadingdemo_cpp;
     const int           threadingdemo_cppSize = 10047;
@@ -51,10 +51,10 @@ namespace BinaryData
     const int           treedemo_xmlSize = 1126;
 
     extern const char*  treeviewdemo_cpp;
-    const int           treeviewdemo_cppSize = 7534;
+    const int           treeviewdemo_cppSize = 7715;
 
     extern const char*  widgetsdemo_cpp;
-    const int           widgetsdemo_cppSize = 51573;
+    const int           widgetsdemo_cppSize = 53388;
 
 };
 

extras/juce demo/src/binarydata/WidgetsDemo.cpp

@@ -979,6 +979,10 @@ public:
 
     void run()
     {
+        setProgress (-1.0); // setting a value beyond the range 0 -> 1 will show a spinning bar..
+        setStatusMessage (T("Preparing to do some stuff..."));
+        wait (2000);
+
         const int thingsToDo = 10;
 
         for (int i = 0; i < thingsToDo; ++i)
@@ -991,10 +995,14 @@ public:
             // this will update the progress bar on the dialog box
             setProgress (i / (double) thingsToDo);
 
-            wait (500);
-
             setStatusMessage (String (thingsToDo - i) + T(" things left to do..."));
+
+            wait (500);
         }
+
+        setProgress (-1.0); // setting a value beyond the range 0 -> 1 will show a spinning bar..
+        setStatusMessage (T("Finishing off the last few bits and pieces!"));
+        wait (3000);
     }
 };
 

extras/juce demo/src/demos/WidgetsDemo.cpp

@@ -979,6 +979,10 @@ public:
 
     void run()
     {
+        setProgress (-1.0); // setting a value beyond the range 0 -> 1 will show a spinning bar..
+        setStatusMessage (T("Preparing to do some stuff..."));
+        wait (2000);
+
         const int thingsToDo = 10;
 
         for (int i = 0; i < thingsToDo; ++i)
@@ -991,10 +995,14 @@ public:
             // this will update the progress bar on the dialog box
             setProgress (i / (double) thingsToDo);
 
-            wait (500);
-
             setStatusMessage (String (thingsToDo - i) + T(" things left to do..."));
+
+            wait (500);
         }
+
+        setProgress (-1.0); // setting a value beyond the range 0 -> 1 will show a spinning bar..
+        setStatusMessage (T("Finishing off the last few bits and pieces!"));
+        wait (3000);
     }
 };
 

src/juce_appframework/audio/audio_file_formats/juce_AudioThumbnail.cpp

@@ -36,7 +36,7 @@ BEGIN_JUCE_NAMESPACE
 #include "juce_AudioThumbnail.h"
 #include "juce_AudioThumbnailCache.h"
 
-const int timeBeforeDeletingReader = 1000;
+const int timeBeforeDeletingReader = 2000;
 
 
 //==============================================================================
@@ -98,30 +98,34 @@ AudioThumbnail::~AudioThumbnail()
 void AudioThumbnail::setSource (InputSource* const newSource)
 {
     cache.removeThumbnail (this);
+    stopTimer();
+
+    {
+        const ScopedLock sl (readerLock);
+        deleteAndZero (reader);
+    }
 
     delete source;
     source = newSource;
 
-    {
-        const ScopedLock sl (readerLock);
-
-        deleteAndZero (reader);
-        reader = createReader();
-    }
-
     clear();
 
-    if (reader != 0)
+    if (! (cache.loadThumb (*this, newSource->hashCode()) 
+           && isFullyLoaded()))
     {
-        startTimer (timeBeforeDeletingReader);
+        {
+            const ScopedLock sl (readerLock);
+            reader = createReader();
+        }
 
-        initialiseFromAudioFile (*reader);
-
-        cache.loadThumb (*this, newSource->hashCode());
-
-        if (! isFullyLoaded())
+        if (reader != 0)
+        {
+            initialiseFromAudioFile (*reader);
             cache.addThumbnail (this);
+        }
     }
+
+    sendChangeMessage (this);
 }
 
 bool AudioThumbnail::useTimeSlice()
@@ -143,7 +147,7 @@ bool AudioThumbnail::useTimeSlice()
     if (reader != 0)
     {
         readNextBlockFromAudioFile (*reader);
-        startTimer (timeBeforeDeletingReader);
+        stopTimer();
 
         sendChangeMessage (this);
 

src/juce_appframework/gui/components/controls/juce_ProgressBar.cpp

@@ -56,6 +56,12 @@ void ProgressBar::setPercentageDisplay (const bool shouldDisplayPercentage)
     repaint();
 }
 
+void ProgressBar::setTextToDisplay (const String& text)
+{
+    displayPercentage = false;
+    displayedMessage = text;
+}
+
 void ProgressBar::lookAndFeelChanged()
 {
     setOpaque (findColour (backgroundColourId).isOpaque());
@@ -68,23 +74,21 @@ void ProgressBar::colourChanged()
 
 void ProgressBar::paint (Graphics& g)
 {
-    getLookAndFeel().drawProgressBar (g, *this,
-                                      0, 0,
-                                      getWidth(),
-                                      getHeight(),
-                                      (float) currentValue);
+    String text;
 
     if (displayPercentage)
     {
-        String percent;
-        percent << roundDoubleToInt (currentValue * 100.0) << T("%");
-
-        g.setColour (Colour::contrasting (findColour (foregroundColourId),
-                                          findColour (backgroundColourId)));
-        g.setFont (getHeight() * 0.6f);
-
-        g.drawText (percent, 0, 0, getWidth(), getHeight(), Justification::centred, false);
+        if (currentValue >= 0 && currentValue <= 1.0)
+            text << roundDoubleToInt (currentValue * 100.0) << T("%");
     }
+    else
+    {
+        text = displayedMessage;
+    }
+
+    getLookAndFeel().drawProgressBar (g, *this,
+                                      getWidth(), getHeight(),
+                                      currentValue, text);
 }
 
 void ProgressBar::visibilityChanged()
@@ -99,18 +103,19 @@ void ProgressBar::timerCallback()
 {
     double newProgress = progress;
 
-    if (newProgress < 0)
-        newProgress = 0;
-
-    if (newProgress > 1.0)
-        newProgress = 1.0;
-
-    if (currentValue != newProgress)
+    if (currentValue != newProgress 
+         || newProgress < 0 || newProgress >= 1.0
+         || currentMessage != displayedMessage)
     {
-        if (currentValue < newProgress)
+        if (currentValue < newProgress 
+             && newProgress >= 0 && newProgress < 1.0
+             && currentValue >= 0 && newProgress < 1.0)
+        {
             newProgress = jmin (currentValue + 0.02, newProgress);
+        }
 
         currentValue = newProgress;
+        currentMessage = displayedMessage;
         repaint();
     }
 }

src/juce_appframework/gui/components/controls/juce_ProgressBar.h

@@ -78,6 +78,13 @@ public:
     */
     void setPercentageDisplay (const 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.
@@ -111,6 +118,7 @@ private:
     double& progress;
     double currentValue;
     bool displayPercentage;
+    String displayedMessage, currentMessage;
 
     void timerCallback();
 

src/juce_appframework/gui/components/lookandfeel/juce_LookAndFeel.cpp

@@ -63,6 +63,7 @@ BEGIN_JUCE_NAMESPACE
 #include "../juce_Desktop.h"
 #include "../../graphics/imaging/juce_ImageCache.h"
 #include "../../graphics/brushes/juce_GradientBrush.h"
+#include "../../graphics/brushes/juce_ImageBrush.h"
 #include "../../graphics/fonts/juce_GlyphArrangement.h"
 #include "../../graphics/drawables/juce_DrawableComposite.h"
 #include "../../graphics/drawables/juce_DrawablePath.h"
@@ -163,7 +164,7 @@ LookAndFeel::LookAndFeel()
         AlertWindow::textColourId,                  0xff000000,
         AlertWindow::outlineColourId,               0xff666666,
 
-        ProgressBar::backgroundColourId,            0xffffffff,
+        ProgressBar::backgroundColourId,            0xffeeeeee,
         ProgressBar::foregroundColourId,            0xffaaaaee,
 
         TooltipWindow::backgroundColourId,          0xffeeeebb,
@@ -509,24 +510,64 @@ int LookAndFeel::getAlertBoxWindowFlags()
 }
 
 void LookAndFeel::drawProgressBar (Graphics& g, ProgressBar& progressBar,
-                                   int x, int y, int w, int h,
-                                   float progress)
+                                   int width, int height,
+                                   double progress, const String& textToShow)
 {
     const Colour background (progressBar.findColour (ProgressBar::backgroundColourId));
+    const Colour foreground (progressBar.findColour (ProgressBar::foregroundColourId));
+
     g.fillAll (background);
 
-    g.setColour (background.contrasting (0.2f));
-    g.drawRect (x, y, w, h);
+    if (progress >= 0.0f && progress < 1.0f)
+    {
+        drawGlassLozenge (g, 1.0f, 1.0f,
+                          (float) jlimit (0.0, width - 2.0, progress * (width - 2.0)),
+                          (float) (height - 2),
+                          foreground,
+                          0.5f, 0.0f,
+                          true, true, true, true);
+    }
+    else
+    {
+        // spinning bar..
+        g.setColour (foreground);
 
-    drawGlassLozenge (g,
-                      (float) (x + 1),
-                      (float) (y + 1),
-                      jlimit (0.0f, w - 2.0f, progress * (w - 2.0f)),
-                      (float) (h - 2),
-                      progressBar.findColour (ProgressBar::foregroundColourId),
-                      0.5f,
-                      0.0f,
-                      true, true, true, true);
+        const int stripeWidth = height * 2;
+        const int position = (Time::getMillisecondCounter() / 15) % stripeWidth;
+
+        Path p;
+
+        for (float x = (float) (stripeWidth - position); x < width + stripeWidth; x += stripeWidth)
+            p.addQuadrilateral (x, 0.0f, 
+                                x + stripeWidth * 0.5f, 0.0f, 
+                                x, (float) height,
+                                x - stripeWidth * 0.5f, (float) height);
+
+        Image im (Image::ARGB, width, height, true);
+
+        {
+            Graphics g (im);
+            drawGlassLozenge (g, 1.0f, 1.0f,
+                              (float) (width - 2),
+                              (float) (height - 2),
+                              foreground,
+                              0.5f, 0.0f,
+                              true, true, true, true);
+        }
+
+        ImageBrush ib (&im, 0, 0, 0.85f);
+        g.setBrush (&ib);
+
+        g.fillPath (p);
+    }
+
+    if (textToShow.isNotEmpty())
+    {
+        g.setColour (Colour::contrasting (background, foreground));
+        g.setFont (height * 0.6f);
+
+        g.drawText (textToShow, 0, 0, width, height, Justification::centred, false);
+    }
 }
 
 void LookAndFeel::drawScrollbarButton (Graphics& g,

src/juce_appframework/gui/components/lookandfeel/juce_LookAndFeel.h

@@ -168,11 +168,15 @@ public:
 
     /** 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& g, ProgressBar& progressBar,
-                                  int x, int y, int w, int h,
-                                  float progress);
+                                  int width, int height,
+                                  double progress, const String& textToShow);
 
     //==============================================================================
     /** Draws one of the buttons on a scrollbar.
@@ -577,6 +581,7 @@ protected:
     virtual int drawTickBox (Graphics&, int, int, int, int, bool, const bool, const bool, const bool) { return 0; }
 
     virtual int drawProgressBar (Graphics&, int, int, int, int, float) { return 0; }
+    virtual int drawProgressBar (Graphics&, ProgressBar&, int, int, int, int, float) { return 0; }
 
     virtual void getTabButtonBestWidth (int, const String&, int) {}
 

src/juce_appframework/gui/components/lookandfeel/juce_OldSchoolLookAndFeel.cpp

@@ -184,17 +184,33 @@ void OldSchoolLookAndFeel::drawToggleButton (Graphics& g,
 }
 
 void OldSchoolLookAndFeel::drawProgressBar (Graphics& g, ProgressBar& progressBar,
-                                            int x, int y, int w, int h,
-                                            float progress)
+                                            int width, int height,
+                                            double progress, const String& textToShow)
 {
-    g.fillAll (progressBar.findColour (ProgressBar::backgroundColourId));
+    if (progress < 0 || progress >= 1.0)
+    {
+        LookAndFeel::drawProgressBar (g, progressBar, width, height, progress, textToShow);
+    }
+    else
+    {
+        const Colour background (progressBar.findColour (ProgressBar::backgroundColourId));
+        const Colour foreground (progressBar.findColour (ProgressBar::foregroundColourId));
 
-    g.setColour (progressBar.findColour (ProgressBar::foregroundColourId));
+        g.fillAll (background);
+        g.setColour (foreground);
 
-    g.fillRect (x + 1,
-                y + 1,
-                jlimit (0, w - 2, roundFloatToInt (progress * (w - 2))),
-                h - 2);
+        g.fillRect (1, 1,
+                    jlimit (0, width - 2, roundDoubleToInt (progress * (width - 2))),
+                    height - 2);
+
+        if (textToShow.isNotEmpty())
+        {
+            g.setColour (Colour::contrasting (background, foreground));
+            g.setFont (height * 0.6f);
+
+            g.drawText (textToShow, 0, 0, width, height, Justification::centred, false);
+        }
+    }
 }
 
 void OldSchoolLookAndFeel::drawScrollbarButton (Graphics& g,

src/juce_appframework/gui/components/lookandfeel/juce_OldSchoolLookAndFeel.h

@@ -75,8 +75,8 @@ public:
 
     //==============================================================================
     virtual void drawProgressBar (Graphics& g, ProgressBar& progressBar,
-                                  int x, int y, int w, int h,
-                                  float progress);
+                                  int width, int height,
+                                  double progress, const String& textToShow);
 
     //==============================================================================
     virtual void drawScrollbarButton (Graphics& g,