src/tests/libs/alm/BadLayout.cpp

   1 /*
   2  * Copyright 2007-2008, Christof Lutteroth, lutteroth@cs.auckland.ac.nz
   3  * Copyright 2007-2008, James Kim, jkim202@ec.auckland.ac.nz
   4  * Copyright 2010, Clemens Zeidler <haiku@clemens-zeidler.de>
   5  * Copyright 2012, Haiku, Inc.
   6  * Distributed under the terms of the MIT License.
   7  */
   8
   9 #include <Alert.h>
  10 #include <Application.h>
  11 #include <Button.h>
  12 #include <Window.h>
  13
  14 #include <stdio.h>
  15
  16 // include this for ALM
  17 #include "ALMLayout.h"
  18
  19
  20 class BAlertPolicy : public BALMLayout::BadLayoutPolicy {
  21         virtual bool OnBadLayout(BALMLayout* layout, ResultType result,
  22                 BLayoutContext* context)
  23         {
  24                 BAlert* alert = new BAlert("layout failure", "layout failed!",
  25                                                         "sure");
  26                 alert->Go();
  27                 return true;
  28         }
  29 };
  30
  31
  32 class BadLayoutWindow : public BWindow {
  33 public:
  34         BadLayoutWindow(BRect frame)
  35                 :
  36                 BWindow(frame, "ALM Bad Layout", B_TITLED_WINDOW,
  37                         B_QUIT_ON_WINDOW_CLOSE)
  38         {
  39                 button1 = new BButton("Bad Layout!");
  40
  41                 // create a new BALMLayout and use  it for this window
  42                 fLayout = new BALMLayout();
  43                 SetLayout(fLayout);
  44
  45                 // add an area containing the button
  46                 // use the borders of the layout as the borders for the area
  47                 fLayout->AddView(button1, fLayout->Left(), fLayout->Top(),
  48                         fLayout->Right(), fLayout->Bottom());
  49                 button1->SetExplicitMinSize(BSize(50, 50));
  50                 button1->SetExplicitMaxSize(BSize(500, 500));
  51                 button1->SetExplicitAlignment(BAlignment(B_ALIGN_USE_FULL_WIDTH,
  52                         B_ALIGN_USE_FULL_HEIGHT));
  53
  54
  55                 BButton* button2 = new BButton("can't fit!");
  56                 fLayout->AddView(button2, fLayout->RightOf(button1), fLayout->Top(),
  57                         fLayout->Right(), fLayout->Bottom());
  58                 button2->SetExplicitMinSize(BSize(50, 50));
  59
  60                 fLayout->SetBadLayoutPolicy(new BAlertPolicy());
  61                 // test size limits
  62                 BSize min = fLayout->MinSize();
  63                 BSize max = fLayout->MaxSize();
  64                 SetSizeLimits(min.Width(), max.Width(), min.Height(), max.Height());
  65
  66                 printf("moving to standard BALMLayout BadLayoutPolicy\n");
  67                 fLayout->SetBadLayoutPolicy(NULL);
  68         }
  69
  70 private:
  71         BALMLayout* fLayout;
  72         BButton* button1;
  73 };
  74
  75
  76 class BadLayout : public BApplication {
  77 public:
  78         BadLayout()
  79                 :
  80                 BApplication("application/x-vnd.haiku.BadLayout")
  81         {
  82                 BRect frameRect;
  83                 frameRect.Set(100, 100, 300, 300);
  84                 BadLayoutWindow* window = new BadLayoutWindow(frameRect);
  85                 window->Show();
  86         }
  87 };
  88
  89
  90 int
  91 main()
  92 {
  93         BadLayout app;
  94         app.Run();
  95         return 0;
  96 }
  97