src/tests/servers/app/scrollbar/main.cpp

   1 #include <stdio.h>
   2
   3 #include <Application.h>
   4 #include <ScrollBar.h>
   5 #include <ScrollView.h>
   6 #include <Window.h>
   7
   8 class View : public BView {
   9 public:
  10         View(BRect frame)
  11                 : BView(frame, "target view", B_FOLLOW_ALL,
  12                         B_WILL_DRAW | B_FRAME_EVENTS)
  13         {
  14         }
  15
  16         virtual void Draw(BRect updateRect)
  17         {
  18                 BRect b = Bounds().OffsetToCopy(B_ORIGIN);
  19                 b.bottom = b.bottom * 2.0;
  20                 StrokeLine(b.LeftTop(), b.RightBottom());
  21         }
  22
  23         virtual void AttachedToWindow()
  24         {
  25                 UpdateScrollbar(Bounds().Height());
  26         }
  27
  28         virtual void FrameResized(float width, float height)
  29         {
  30                 UpdateScrollbar(height);
  31         }
  32
  33         void UpdateScrollbar(float height)
  34         {
  35                 BScrollBar* scrollBar = ScrollBar(B_VERTICAL);
  36                 if (!scrollBar) {
  37                         printf("no vertical scroll bar\n");
  38                         return;
  39                 }
  40                 float smallStep, bigStep;
  41                 scrollBar->GetSteps(&smallStep, &bigStep);
  42                 printf("scrollbar steps: %.1f, %.1f, proportion: %.1f\n",
  43                         smallStep, bigStep, scrollBar->Proportion());
  44
  45                 scrollBar->SetRange(0.0, height);
  46                 scrollBar->SetSteps(5.0, height / 2);
  47
  48                 scrollBar->GetSteps(&smallStep, &bigStep);
  49                 printf("scrollbar steps: %.1f, %.1f, proportion: %.1f, "
  50                         "range: %.1f\n",
  51                         smallStep, bigStep, scrollBar->Proportion(),
  52                         height);
  53         }
  54 };
  55
  56
  57 int
  58 main(int argc, char* argv[])
  59 {
  60         BApplication app("application/x-vnd.stippi.scrollbar_test");
  61
  62         BRect frame(50, 50, 350, 350);
  63         BWindow* window = new BWindow(frame, "BScrollBar Test",
  64                 B_TITLED_WINDOW_LOOK, B_NORMAL_WINDOW_FEEL,
  65                 B_ASYNCHRONOUS_CONTROLS | B_QUIT_ON_WINDOW_CLOSE);
  66
  67         frame = window->Bounds();
  68         frame.right -= B_V_SCROLL_BAR_WIDTH;
  69         View* view = new View(frame);
  70
  71         BScrollView* scrollView = new BScrollView("scroll view", view,
  72                 B_FOLLOW_ALL, 0, false, true, B_NO_BORDER);
  73
  74         window->AddChild(scrollView);
  75         window->Show();
  76
  77         app.Run();
  78         return 0;
  79 }
  80
  81