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

   1 // main.cpp
   2
   3 #include <stdio.h>
   4
   5 #include "Application.h"
   6 #include "Message.h"
   7 #include "Button.h"
   8 #include "View.h"
   9 #include "Window.h"
  10
  11 enum {
  12         MSG_RESET = 'rset'
  13 };
  14
  15 class TestView : public BView {
  16
  17  public:
  18                                         TestView(BRect frame, const char* name,
  19                                                           uint32 resizeFlags, uint32 flags)
  20                                                 : BView(frame, name, resizeFlags, flags),
  21                                                   fTracking(false),
  22                                                   fLastMousePos(0.0, 0.0)
  23                                         {
  24                                                 SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
  25                                                 SetLowUIColor(ViewUIColor());
  26                                         }
  27
  28         virtual void    MessageReceived(BMessage* message);
  29
  30         virtual void    Draw(BRect updateRect);
  31
  32         virtual void    MouseDown(BPoint where);
  33         virtual void    MouseUp(BPoint where);
  34         virtual void    MouseMoved(BPoint where, uint32 transit,
  35                                                            const BMessage* dragMessage);
  36
  37  private:
  38                         bool    fTracking;
  39
  40                         BPoint  fLastMousePos;
  41 };
  42
  43 // MessageReceived
  44 void
  45 TestView::MessageReceived(BMessage* message)
  46 {
  47         if (message->what == MSG_RESET)
  48                 ScrollTo(0.0, 0.0);
  49         else
  50                 BView::MessageReceived(message);
  51 }
  52
  53 // Draw
  54 void
  55 TestView::Draw(BRect updateRect)
  56 {
  57         // ellipses
  58         SetHighColor(200, 90, 0, 100);
  59         StrokeEllipse(BPoint(80.0, 50.0), 70.0, 40.0);
  60
  61         SetDrawingMode(B_OP_ALPHA);
  62
  63         SetPenSize(2.0);
  64         SetHighColor(20, 40, 180, 150);
  65         StrokeEllipse(BPoint(230.0, 90.0), 14.0, 60.0);
  66
  67         SetPenSize(5.0);
  68         SetHighColor(60, 20, 110, 100);
  69         StrokeEllipse(BPoint(100.0, 180.0), 35.0, 25.0);
  70
  71         // text
  72         SetHighColor(0, 0, 0, 255);
  73         SetDrawingMode(B_OP_OVER);
  74         const char* message = "Click and drag to scroll this view!";
  75         DrawString(message, BPoint(0.0, 30.0));
  76 }
  77
  78 // MouseDown
  79 void
  80 TestView::MouseDown(BPoint where)
  81 {
  82         fTracking = true;
  83         fLastMousePos = where;
  84         SetMouseEventMask(B_POINTER_EVENTS);
  85 }
  86
  87 // MouseUp
  88 void
  89 TestView::MouseUp(BPoint where)
  90 {
  91         fTracking = false;
  92 }
  93
  94 // MouseMoved
  95 void
  96 TestView::MouseMoved(BPoint where, uint32 transit,
  97                                          const BMessage* dragMessage)
  98 {
  99         if (fTracking) {
 100                 BPoint offset = fLastMousePos - where;
 101                 ScrollBy(offset.x, offset.y);
 102                 fLastMousePos = where + offset;
 103         }
 104 }
 105
 106
 107
 108 // show_window
 109 void
 110 show_window(BRect frame, const char* name)
 111 {
 112         BWindow* window = new BWindow(frame, name,
 113                                                                   B_TITLED_WINDOW,
 114                                                                   B_ASYNCHRONOUS_CONTROLS | B_QUIT_ON_WINDOW_CLOSE);
 115
 116         BView* view = new TestView(window->Bounds(), "test", B_FOLLOW_ALL,
 117                                                            B_WILL_DRAW/* | B_FULL_UPDATE_ON_RESIZE*/);
 118
 119         window->AddChild(view);
 120         BRect b(0.0, 0.0, 60.0, 15.0);
 121         b.OffsetTo(5.0, view->Bounds().bottom - (b.Height() + 15.0));
 122         BButton* control = new BButton(b, "button", "Reset", new BMessage(MSG_RESET));
 123         view->AddChild(control);
 124         control->SetTarget(view);
 125
 126         window->Show();
 127 }
 128
 129 // main
 130 int
 131 main(int argc, char** argv)
 132 {
 133         BApplication* app = new BApplication("application/x.vnd-Haiku.Scrolling");
 134
 135         BRect frame(50.0, 50.0, 300.0, 250.0);
 136         show_window(frame, "Scrolling Test");
 137
 138         app->Run();
 139
 140         delete app;
 141         return 0;
 142 }