juce/source/extras/JuceDemo/Source/demos/FontsAndTextDemo.cpp

   1 /*
   2   ==============================================================================
   3
   4    This file is part of the JUCE library - "Jules' Utility Class Extensions"
   5    Copyright 2004-9 by Raw Material Software Ltd.
   6
   7   ------------------------------------------------------------------------------
   8
   9    JUCE can be redistributed and/or modified under the terms of the GNU General
  10    Public License (Version 2), as published by the Free Software Foundation.
  11    A copy of the license is included in the JUCE distribution, or can be found
  12    online at www.gnu.org/licenses.
  13
  14    JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
  15    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  16    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  17
  18   ------------------------------------------------------------------------------
  19
  20    To release a closed-source product which uses JUCE, commercial licenses are
  21    available: visit www.rawmaterialsoftware.com/juce for more information.
  22
  23   ==============================================================================
  24 */
  25
  26 #include "../jucedemo_headers.h"
  27
  28
  29 //==============================================================================
  30 class FontsAndTextDemo  : public Component,
  31                           public ListBoxModel,
  32                           public ButtonListener,
  33                           public SliderListener
  34 {
  35 public:
  36     //==============================================================================
  37     FontsAndTextDemo()
  38         : boldButton ("Bold"),
  39           italicButton ("Italic"),
  40           sizeLabel (String::empty, "Size"),
  41           kerningLabel (String::empty, "Kerning"),
  42           horizontalScaleLabel (String::empty, "Scale")
  43     {
  44         setName ("Fonts");
  45
  46         Font::findFonts (fonts);
  47
  48         addAndMakeVisible (listBox = new ListBox ("fonts", this));
  49         listBox->setRowHeight (28);
  50
  51         addAndMakeVisible (&textBox);
  52
  53         textBox.setColour (TextEditor::backgroundColourId, Colours::white);
  54         textBox.setColour (TextEditor::outlineColourId, Colours::black.withAlpha (0.5f));
  55
  56         textBox.setMultiLine (true, true);
  57         textBox.setReturnKeyStartsNewLine (true);
  58         textBox.setText ("The Quick Brown Fox Jumps Over The Lazy Dog\n\nAa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz 0123456789");
  59
  60         addAndMakeVisible (&boldButton);
  61         boldButton.addListener (this);
  62
  63         addAndMakeVisible (&italicButton);
  64         italicButton.addListener (this);
  65
  66         addAndMakeVisible (&sizeSlider);
  67         sizeSlider.setRange (3.0, 150.0, 0.1);
  68         sizeSlider.setValue (20.0);
  69         sizeSlider.addListener (this);
  70         sizeLabel.attachToComponent (&sizeSlider, true);
  71
  72         addAndMakeVisible (&kerningSlider);
  73         kerningSlider.setRange (-1.0, 1.0, 0.01);
  74         kerningSlider.setValue (0.0);
  75         kerningSlider.addListener (this);
  76         kerningLabel.attachToComponent (&kerningSlider, true);
  77
  78         addAndMakeVisible (&horizontalScaleSlider);
  79         horizontalScaleSlider.setRange (0.1, 4.0, 0.01);
  80         horizontalScaleSlider.setValue (1.0);
  81         horizontalScaleSlider.addListener (this);
  82         horizontalScaleLabel.attachToComponent (&horizontalScaleSlider, true);
  83
  84         listBox->setColour (ListBox::outlineColourId, Colours::black.withAlpha (0.5f));
  85         listBox->setOutlineThickness (1);
  86         listBox->selectRow (Random::getSystemRandom().nextInt (fonts.size()));
  87
  88         // set up the layout and resizer bars..
  89
  90         verticalLayout.setItemLayout (0, -0.2, -0.8, -0.5);  // width of the font list must be
  91                                                              // between 20% and 80%, preferably 50%
  92         verticalLayout.setItemLayout (1, 8, 8, 8);           // the vertical divider drag-bar thing is always 8 pixels wide
  93         verticalLayout.setItemLayout (2, 150, -1.0, -0.5);   // the components on the right must be
  94                                                              // at least 150 pixels wide, preferably 50% of the total width
  95
  96         verticalDividerBar = new StretchableLayoutResizerBar (&verticalLayout, 1, true);
  97         addAndMakeVisible (verticalDividerBar);
  98     }
  99
 100     ~FontsAndTextDemo()
 101     {
 102     }
 103
 104     void resized()
 105     {
 106         // lay out the list box and vertical divider..
 107         Component* vcomps[] = { listBox, verticalDividerBar, 0 };
 108
 109         verticalLayout.layOutComponents (vcomps, 3,
 110                                          4, 4, getWidth() - 8, getHeight() - 8,
 111                                          false,     // lay out side-by-side
 112                                          true);     // resize the components' heights as well as widths
 113
 114         // now lay out the text box and the controls below it..
 115         int x = verticalLayout.getItemCurrentPosition (2) + 4;
 116         textBox.setBounds (x, 0, getWidth() - x, getHeight() - 110);
 117         x += 70;
 118         sizeSlider.setBounds (x, getHeight() - 106, getWidth() - x, 22);
 119         kerningSlider.setBounds (x, getHeight() - 82, getWidth() - x, 22);
 120         horizontalScaleSlider.setBounds (x, getHeight() - 58, getWidth() - x, 22);
 121         boldButton.setBounds (x, getHeight() - 34, (getWidth() - x) / 2, 22);
 122         italicButton.setBounds (x + (getWidth() - x) / 2, getHeight() - 34, (getWidth() - x) / 2, 22);
 123     }
 124
 125     // implements the ListBoxModel method
 126     int getNumRows()
 127     {
 128         return fonts.size();
 129     }
 130
 131     // implements the ListBoxModel method
 132     void paintListBoxItem (int rowNumber,
 133                            Graphics& g,
 134                            int width, int height,
 135                            bool rowIsSelected)
 136     {
 137         if (rowIsSelected)
 138             g.fillAll (Colours::lightblue);
 139
 140         Font font (fonts [rowNumber]);
 141         font.setHeight (height * 0.7f);
 142
 143         g.setFont (font);
 144         g.setColour (Colours::black);
 145         g.drawText (font.getTypefaceName(),
 146                     4, 0, width - 4, height,
 147                     Justification::centredLeft, true);
 148
 149         int x = jmax (0, font.getStringWidth (font.getTypefaceName())) + 12;
 150         g.setFont (Font (11.0f, Font::italic));
 151         g.setColour (Colours::grey);
 152         g.drawText (font.getTypefaceName(),
 153                     x, 0, width - x - 2, height,
 154                     Justification::centredLeft, true);
 155     }
 156
 157     void updatePreviewBoxText()
 158     {
 159         Font font (fonts [listBox->getSelectedRow()]);
 160
 161         font.setHeight ((float) sizeSlider.getValue());
 162         font.setBold (boldButton.getToggleState());
 163         font.setItalic (italicButton.getToggleState());
 164         font.setExtraKerningFactor ((float) kerningSlider.getValue());
 165         font.setHorizontalScale ((float) horizontalScaleSlider.getValue());
 166
 167         textBox.applyFontToAllText (font);
 168     }
 169
 170     void selectedRowsChanged (int /*lastRowselected*/)
 171     {
 172         updatePreviewBoxText();
 173     }
 174
 175     void buttonClicked (Button*)
 176     {
 177         updatePreviewBoxText();
 178     }
 179
 180     void sliderValueChanged (Slider*)
 181     {
 182         // (this is called when the size slider is moved)
 183         updatePreviewBoxText();
 184     }
 185
 186 private:
 187     Array<Font> fonts;
 188
 189     ScopedPointer<ListBox> listBox;
 190     TextEditor textBox;
 191     ToggleButton boldButton, italicButton;
 192     Slider sizeSlider, kerningSlider, horizontalScaleSlider;
 193     Label sizeLabel, kerningLabel, horizontalScaleLabel;
 194
 195     StretchableLayoutManager verticalLayout;
 196     ScopedPointer<StretchableLayoutResizerBar> verticalDividerBar;
 197 };
 198
 199
 200 //==============================================================================
 201 Component* createFontsAndTextDemo()
 202 {
 203     return new FontsAndTextDemo();
 204 }