src/apps/mediaplayer/interface/SymbolButton.cpp

   1 /*
   2  * Copyright 2010, Stephan Aßmus <superstippi@gmx.de>.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include "SymbolButton.h"
   8
   9 #include <GradientLinear.h>
  10 #include <LayoutUtils.h>
  11 #include <Shape.h>
  12
  13
  14 static const rgb_color kGreen = (rgb_color){ 116, 224, 0, 255 };
  15
  16
  17 // constructor
  18 SymbolButton::SymbolButton(const char* name, BShape* symbolShape,
  19                 BMessage* message, uint32 borders)
  20         :
  21         BButton(name, NULL, message),
  22         fSymbol(symbolShape),
  23         fBorders(borders)
  24 {
  25 }
  26
  27
  28 SymbolButton::~SymbolButton()
  29 {
  30         delete fSymbol;
  31 }
  32
  33
  34 void
  35 SymbolButton::Draw(BRect updateRect)
  36 {
  37         uint32 flags = be_control_look->Flags(this);
  38         rgb_color base = LowColor();
  39         BRect bounds(Bounds());
  40
  41         if (fBorders != 0) {
  42                 be_control_look->DrawButtonFrame(this, bounds, updateRect, base,
  43                         base, flags & ~BControlLook::B_DISABLED, fBorders);
  44                 be_control_look->DrawButtonBackground(this, bounds, updateRect, base,
  45                         flags);
  46         } else
  47                 FillRect(updateRect, B_SOLID_LOW);
  48
  49         if (fSymbol == NULL)
  50                 return;
  51
  52         if (IsEnabled()) {
  53                 if (Value() == B_CONTROL_ON)
  54                         base = tint_color(base, (B_DARKEN_4_TINT + B_DARKEN_MAX_TINT) / 2);
  55                 else
  56                         base = tint_color(base, B_DARKEN_4_TINT);
  57         } else {
  58                 if (Value() == B_CONTROL_ON)
  59                         base = tint_color(base, B_DARKEN_2_TINT);
  60                 else
  61                         base = tint_color(base, B_DARKEN_1_TINT);
  62         }
  63
  64         BPoint offset;
  65         offset.x = (bounds.left + bounds.right) / 2;
  66         offset.y = (bounds.top + bounds.bottom) / 2;
  67         offset.x -= fSymbol->Bounds().Width() / 2;
  68         offset.y -= fSymbol->Bounds().Height() / 2;
  69         offset.x = floorf(offset.x - fSymbol->Bounds().left);
  70         offset.y = ceilf(offset.y - fSymbol->Bounds().top);
  71
  72         MovePenTo(offset);
  73         BGradientLinear gradient;
  74         gradient.AddColor(tint_color(base, B_DARKEN_1_TINT), 0);
  75         gradient.AddColor(base, 255);
  76         gradient.SetStart(offset);
  77         offset.y += fSymbol->Bounds().Height();
  78         gradient.SetEnd(offset);
  79         FillShape(fSymbol, gradient);
  80 }
  81
  82
  83 BSize
  84 SymbolButton::MinSize()
  85 {
  86         if (fSymbol == NULL)
  87                 return BButton::MinSize();
  88
  89         float scale = fBorders != 0 ? 2.5f : 1.0f;
  90
  91         BSize size;
  92         size.width = ceilf(fSymbol->Bounds().Width() * scale);
  93         size.height = ceilf(fSymbol->Bounds().Height() * scale);
  94         return BLayoutUtils::ComposeSize(ExplicitMinSize(), size);
  95 }
  96
  97
  98 BSize
  99 SymbolButton::MaxSize()
 100 {
 101         BSize size(MinSize());
 102         if (fBorders != 0)
 103                 size.width = ceilf(size.width * 1.5f);
 104         return BLayoutUtils::ComposeSize(ExplicitMaxSize(), size);
 105 }
 106
 107
 108 void
 109 SymbolButton::SetSymbol(BShape* symbolShape)
 110 {
 111         BSize oldSize = MinSize();
 112
 113         delete fSymbol;
 114         fSymbol = symbolShape;
 115
 116         if (MinSize() != oldSize)
 117                 InvalidateLayout();
 118
 119         Invalidate();
 120 }
 121