src/apps/haikudepot/textview/TextView.cpp

   1 /*
   2  * Copyright 2013, Stephan Aßmus <superstippi@gmx.de>.
   3  * All rights reserved. Distributed under the terms of the MIT License.
   4  */
   5
   6 #include "TextView.h"
   7
   8
   9 TextView::TextView(const char* name)
  10         :
  11         BView(name, B_WILL_DRAW | B_FULL_UPDATE_ON_RESIZE | B_FRAME_EVENTS)
  12 {
  13         BFont font;
  14         GetFont(&font);
  15
  16         ::ParagraphStyle style;
  17         style.SetLineSpacing(ceilf(font.Size() * 0.2));
  18
  19         SetParagraphStyle(style);
  20 }
  21
  22
  23 TextView::~TextView()
  24 {
  25 }
  26
  27
  28 void
  29 TextView::Draw(BRect updateRect)
  30 {
  31         FillRect(updateRect, B_SOLID_LOW);
  32
  33         fTextLayout.SetWidth(Bounds().Width());
  34         fTextLayout.Draw(this, B_ORIGIN);
  35 }
  36
  37
  38 void
  39 TextView::AttachedToWindow()
  40 {
  41         AdoptParentColors();
  42 }
  43
  44
  45 void
  46 TextView::FrameResized(float width, float height)
  47 {
  48         fTextLayout.SetWidth(width);
  49 }
  50
  51
  52 BSize
  53 TextView::MinSize()
  54 {
  55         return BSize(50.0f, 0.0f);
  56 }
  57
  58
  59 BSize
  60 TextView::MaxSize()
  61 {
  62         return BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED);
  63 }
  64
  65
  66 BSize
  67 TextView::PreferredSize()
  68 {
  69         return BSize(B_SIZE_UNLIMITED, B_SIZE_UNLIMITED);
  70 }
  71
  72
  73 bool
  74 TextView::HasHeightForWidth()
  75 {
  76         return true;
  77 }
  78
  79
  80 void
  81 TextView::GetHeightForWidth(float width, float* min, float* max,
  82         float* preferred)
  83 {
  84         ParagraphLayout layout(fTextLayout);
  85         layout.SetWidth(width);
  86
  87         float height = layout.Height() + 1;
  88
  89         if (min != NULL)
  90                 *min = height;
  91         if (max != NULL)
  92                 *max = height;
  93         if (preferred != NULL)
  94                 *preferred = height;
  95 }
  96
  97
  98 void
  99 TextView::SetText(const BString& text)
 100 {
 101         fText.Clear();
 102
 103         CharacterStyle regularStyle;
 104         fText.Append(TextSpan(text, regularStyle));
 105
 106         fTextLayout.SetParagraph(fText);
 107
 108         InvalidateLayout();
 109         Invalidate();
 110 }
 111
 112
 113 void
 114 TextView::SetParagraphStyle(const ::ParagraphStyle& style)
 115 {
 116         fText.SetStyle(style);
 117         fTextLayout.SetParagraph(fText);
 118
 119         InvalidateLayout();
 120         Invalidate();
 121 }
 122