src/kits/tracker/OverrideAlert.cpp

   1 /*
   2 Open Tracker License
   3
   4 Terms and Conditions
   5
   6 Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining a copy of
   9 this software and associated documentation files (the "Software"), to deal in
  10 the Software without restriction, including without limitation the rights to
  11 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  12 of the Software, and to permit persons to whom the Software is furnished to do
  13 so, subject to the following conditions:
  14
  15 The above copyright notice and this permission notice applies to all licensees
  16 and shall be included in all copies or substantial portions of the Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21 BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
  23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24
  25 Except as contained in this notice, the name of Be Incorporated shall not be
  26 used in advertising or otherwise to promote the sale, use or other dealings in
  27 this Software without prior written authorization from Be Incorporated.
  28
  29 Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
  30 of Be Incorporated in the United States and other countries. Other brand product
  31 names are registered trademarks or trademarks of their respective holders.
  32 All rights reserved.
  33 */
  34
  35 // defines the status area drawn in the bottom left corner of a Tracker window
  36
  37
  38 #include <Button.h>
  39 #include <Screen.h>
  40
  41 #include "OverrideAlert.h"
  42
  43
  44 OverrideAlert::OverrideAlert(const char* title, const char* text,
  45         const char* button1, uint32 modifiers1,
  46         const char* button2, uint32 modifiers2,
  47         const char* button3, uint32 modifiers3,
  48         button_width width, alert_type type)
  49         :
  50         BAlert(title, text, button1, button2, button3, width, type),
  51         fCurModifiers(0)
  52 {
  53         fButtonModifiers[0] = modifiers1;
  54         fButtonModifiers[1] = modifiers2;
  55         fButtonModifiers[2] = modifiers3;
  56         UpdateButtons(modifiers(), true);
  57
  58         BPoint where = OverPosition(Frame().Width(), Frame().Height());
  59         MoveTo(where.x, where.y);
  60 }
  61
  62
  63 OverrideAlert::OverrideAlert(const char* title, const char* text,
  64         const char* button1, uint32 modifiers1,
  65         const char* button2, uint32 modifiers2,
  66         const char* button3, uint32 modifiers3,
  67         button_width width, button_spacing spacing, alert_type type)
  68         :
  69         BAlert(title, text, button1, button2, button3, width, spacing, type),
  70         fCurModifiers(0)
  71 {
  72         fButtonModifiers[0] = modifiers1;
  73         fButtonModifiers[1] = modifiers2;
  74         fButtonModifiers[2] = modifiers3;
  75         UpdateButtons(modifiers(), true);
  76
  77         BPoint where = OverPosition(Frame().Width(), Frame().Height());
  78         MoveTo(where.x, where.y);
  79 }
  80
  81
  82 OverrideAlert::~OverrideAlert()
  83 {
  84 }
  85
  86
  87 void
  88 OverrideAlert::DispatchMessage(BMessage* message, BHandler* handler)
  89 {
  90         if (message->what == B_KEY_DOWN || message->what == B_KEY_UP
  91                 || message->what == B_UNMAPPED_KEY_DOWN
  92                 || message->what == B_UNMAPPED_KEY_UP) {
  93                 uint32 modifiers;
  94                 if (message->FindInt32("modifiers", (int32*)&modifiers) == B_OK)
  95                         UpdateButtons(modifiers);
  96         }
  97         BAlert::DispatchMessage(message, handler);
  98 }
  99
 100
 101 BPoint
 102 OverrideAlert::OverPosition(float width, float height)
 103 {
 104         // This positions the alert window like a normal alert, put
 105         // places it on top of the calling window if possible.
 106
 107         BWindow* window
 108                 = dynamic_cast<BWindow*>(BLooper::LooperForThread(find_thread(NULL)));
 109         BRect desirableRect;
 110
 111         if (window != NULL) {
 112                 // If we found a window associated with this calling thread,
 113                 // place alert over that window so that the first button is
 114                 // on top of it.  This allows name editing confirmations to
 115                 // work with focus follows mouse -- when the alert goes away,
 116                 // the underlying window will still have focus.
 117
 118                 desirableRect = window->Frame();
 119                 float midX = (desirableRect.left + desirableRect.right) / 2.0f;
 120                 float midY = (desirableRect.top * 3.0f + desirableRect.bottom) / 4.0f;
 121
 122                 desirableRect.left = midX - ceilf(width / 2.0f);
 123                 desirableRect.right = desirableRect.left+width;
 124                 desirableRect.top = midY - ceilf(height / 3.0f);
 125                 desirableRect.bottom = desirableRect.top + height;
 126         } else {
 127                 // Otherwise, place alert in center of (main) screen.
 128
 129                 desirableRect = BScreen().Frame();
 130                 float midX = (desirableRect.left + desirableRect.right) / 2.0f;
 131                 float midY = (desirableRect.top * 3.0f + desirableRect.bottom) / 4.0f;
 132
 133                 desirableRect.left = midX - ceilf(width / 2.0f);
 134                 desirableRect.right = desirableRect.left + width;
 135                 desirableRect.top = midY - ceilf(height / 3.0f);
 136                 desirableRect.bottom = desirableRect.top + height;
 137         }
 138
 139         return desirableRect.LeftTop();
 140 }
 141
 142
 143 void
 144 OverrideAlert::UpdateButtons(uint32 modifiers, bool force)
 145 {
 146         if (modifiers == fCurModifiers && !force)
 147                 return;
 148
 149         fCurModifiers = modifiers;
 150         for (int32 i = 0; i < 3; i++) {
 151                 BButton* button = ButtonAt(i);
 152                 if (button != NULL) {
 153                         button->SetEnabled(((fButtonModifiers[i] & fCurModifiers)
 154                                 == fButtonModifiers[i]));
 155                 }
 156         }
 157 }