src/apps/terminal/TermScrollView.cpp

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 // NOTE: Nasty hack to get access to BScrollView's private parts.
   8 #include <ScrollBar.h>
   9 #define private protected
  10 #include <ScrollView.h>
  11 #undef private
  12
  13 #include "TermScrollView.h"
  14
  15 #include <Message.h>
  16
  17
  18 class TermScrollBar : public BScrollBar {
  19 public:
  20         TermScrollBar(BRect frame, const char *name, BView *target,
  21                         float min, float max, orientation direction)
  22                 :
  23                 BScrollBar(frame, name, target, min, max, direction)
  24         {
  25         }
  26
  27         virtual void ValueChanged(float newValue)
  28         {
  29                 if (BView* target = Target())
  30                         target->ScrollTo(0, newValue);
  31         }
  32 };
  33
  34
  35 TermScrollView::TermScrollView(const char* name, BView* child, BView* target,
  36                 bool overlapTop, uint32 resizingMode)
  37         :
  38         BScrollView(name, child, resizingMode, 0, false, true, B_NO_BORDER)
  39 {
  40         child->TargetedByScrollView(NULL);
  41
  42         // replace the vertical scroll bar with our own
  43         if (fVerticalScrollBar != NULL) {
  44                 BRect frame(fVerticalScrollBar->Frame());
  45                 RemoveChild(fVerticalScrollBar);
  46                 delete fVerticalScrollBar;
  47
  48                 // Overlap one pixel at the top (if required) with the menu for
  49                 // aesthetical reasons.
  50                 if (overlapTop)
  51                         frame.top--;
  52
  53                 TermScrollBar* scrollBar = new TermScrollBar(frame, "_VSB_", target, 0,
  54                         1000, B_VERTICAL);
  55                 AddChild(scrollBar);
  56                 fVerticalScrollBar = scrollBar;
  57         }
  58
  59         target->TargetedByScrollView(this);
  60 }
  61
  62
  63 TermScrollView::~TermScrollView()
  64 {
  65 }