src/apps/soundrecorder/VolumeSlider.cpp

   1 /*
   2  * Copyright 2005, Jérôme Duval. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Inspired by SoundCapture from Be newsletter (Media Kit Basics: Consumers
   6  * and Producers)
   7  */
   8
   9 #include <stdio.h>
  10
  11 #include "VolumeSlider.h"
  12 #include "icon_button.h"
  13
  14 #define VOLUME_CHANGED 'vlcg'
  15 #define RATIO 2.0f
  16
  17 VolumeSlider::VolumeSlider(BRect rect, const char *title, uint32 resizeFlags)
  18         : BControl(rect, "slider", NULL, new BMessage(VOLUME_CHANGED),
  19                 resizeFlags, B_WILL_DRAW),
  20         fLeftBitmap(BRect(0, 0, kLeftVolumeWidth - 1, kLeftVolumeHeight - 1),
  21                 B_CMAP8),
  22         fRightBitmap(BRect(0, 0, kRightVolumeWidth - 1, kRightVolumeHeight - 1),
  23                 B_CMAP8),
  24         fButtonBitmap(BRect(0, 0, kThumbWidth - 1, kThumbHeight - 1), B_CMAP8),
  25         fSoundPlayer(NULL)
  26 {
  27         fLeftBitmap.SetBits(kLeftVolumeBits, kLeftVolumeWidth * kLeftVolumeHeight,
  28                 0, B_CMAP8);
  29         fRightBitmap.SetBits(kRightVolumeBits, kRightVolumeWidth * kRightVolumeHeight,
  30                 0, B_CMAP8);
  31         fButtonBitmap.SetBits(kThumbBits, kThumbWidth * kThumbHeight, 0, B_CMAP8);
  32
  33         fRight = Bounds().right - 15;
  34 }
  35
  36
  37 VolumeSlider::~VolumeSlider()
  38 {
  39
  40 }
  41
  42
  43 void
  44 VolumeSlider::Draw(BRect updateRect)
  45 {
  46         SetHighColor(189, 186, 189);
  47         StrokeLine(BPoint(11, 1), BPoint(fRight, 1));
  48         SetHighColor(0, 0, 0);
  49         StrokeLine(BPoint(11, 2), BPoint(fRight, 2));
  50         SetHighColor(255, 255, 255);
  51         StrokeLine(BPoint(11, 14), BPoint(fRight, 14));
  52         SetHighColor(231, 227, 231);
  53         StrokeLine(BPoint(11, 15), BPoint(fRight, 15));
  54
  55         SetLowColor(ViewColor());
  56
  57         SetDrawingMode(B_OP_OVER);
  58
  59         DrawBitmapAsync(&fLeftBitmap, BPoint(5, 1));
  60         DrawBitmapAsync(&fRightBitmap, BPoint(fRight + 1, 1));
  61
  62         float position = 11 + (fRight - 11) * (fSoundPlayer
  63                 ? fSoundPlayer->Volume() / RATIO : 0);
  64         SetHighColor(102, 152, 102);
  65         FillRect(BRect(11, 3, position, 4));
  66         SetHighColor(152, 203, 152);
  67         FillRect(BRect(11, 5, position, 13));
  68
  69         if (fSoundPlayer)
  70                 SetHighColor(152, 152, 152);
  71         else
  72                 SetHighColor(200, 200, 200);
  73         FillRect(BRect(position, 3, fRight, 13));
  74
  75         SetHighColor(102, 152, 102);
  76         for (int i = 15; i <= fRight + 1; i += 5) {
  77                 if (i > position)
  78                         SetHighColor(128, 128, 128);
  79                 StrokeLine(BPoint(i, 8), BPoint(i, 9));
  80         }
  81
  82         DrawBitmapAsync(&fButtonBitmap, BPoint(position - 5, 3));
  83
  84         Sync();
  85
  86         SetDrawingMode(B_OP_COPY);
  87 }
  88
  89
  90 void
  91 VolumeSlider::MouseMoved(BPoint point, uint32 transit, const BMessage *message)
  92 {
  93         if (!IsTracking())
  94                 return;
  95
  96         uint32 mouseButtons;
  97         BPoint where;
  98         GetMouse(&where, &mouseButtons, true);
  99
 100         // button not pressed, exit
 101         if (! (mouseButtons & B_PRIMARY_MOUSE_BUTTON)) {
 102                 Invoke();
 103                 SetTracking(false);
 104         }
 105
 106         if (!fSoundPlayer || !Bounds().InsetBySelf(2, 2).Contains(point))
 107                 return;
 108
 109         _UpdateVolume(point);
 110 }
 111
 112
 113 void
 114 VolumeSlider::MouseDown(BPoint point)
 115 {
 116         if (!fSoundPlayer || !Bounds().InsetBySelf(2, 2).Contains(point))
 117                 return;
 118
 119         _UpdateVolume(point);
 120         SetTracking(true);
 121         SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS);
 122 }
 123
 124
 125 void
 126 VolumeSlider::MouseUp(BPoint point)
 127 {
 128         if (!IsTracking())
 129                 return;
 130         if (fSoundPlayer && Bounds().InsetBySelf(2, 2).Contains(point)) {
 131                 _UpdateVolume(point);
 132         }
 133
 134         Invoke();
 135         SetTracking(false);
 136         Draw(Bounds());
 137         Flush();
 138 }
 139
 140
 141 void
 142 VolumeSlider::_UpdateVolume(BPoint point)
 143 {
 144         fVolume = MIN(MAX(point.x, 11), fRight);
 145         fVolume = (fVolume - 11) / (fRight - 11);
 146         fVolume = MAX(MIN(fVolume,1), 0);
 147         Draw(Bounds());
 148         Flush();
 149         if (fSoundPlayer)
 150                 fSoundPlayer->SetVolume(fVolume * RATIO);
 151 }
 152
 153 void
 154 VolumeSlider::SetSoundPlayer(BSoundPlayer *player)
 155 {
 156         fSoundPlayer = player;
 157         Invalidate();
 158 }
 159
 160
 161 SpeakerView::SpeakerView(BRect rect, uint32 resizeFlags)
 162         : BBox(rect, "speaker", resizeFlags, B_WILL_DRAW, B_NO_BORDER),
 163         fSpeakerBitmap(BRect(0, 0, kSpeakerIconBitmapWidth - 1,
 164                 kSpeakerIconBitmapHeight - 1), B_CMAP8)
 165 {
 166         fSpeakerBitmap.SetBits(kSpeakerIconBits, kSpeakerIconBitmapWidth
 167                 * kSpeakerIconBitmapHeight, 0, B_CMAP8);
 168 }
 169
 170
 171 SpeakerView::~SpeakerView()
 172 {
 173
 174 }
 175
 176
 177 void
 178 SpeakerView::Draw(BRect updateRect)
 179 {
 180         SetDrawingMode(B_OP_OVER);
 181
 182         DrawBitmap(&fSpeakerBitmap);
 183
 184         SetDrawingMode(B_OP_COPY);
 185 }