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 // Classes used for setting up and managing background images 36 37 38 #ifndef _BACKGROUND_IMAGE_H 39 #define _BACKGROUND_IMAGE_H 40 41 42 #include <ObjectList.h> 43 #include <String.h> 44 45 46 class BNode; 47 class BView; 48 class BBitmap; 49 50 namespace BPrivate { 51 52 class BackgroundImage; 53 class BPoseView; 54 55 extern const char* kBackgroundImageInfo; 56 extern const char* kBackgroundImageInfoOffset; 57 extern const char* kBackgroundImageInfoTextOutline; 58 extern const char* kBackgroundImageInfoMode; 59 extern const char* kBackgroundImageInfoWorkspaces; 60 extern const char* kBackgroundImageInfoPath; 61 62 const uint32 kRestoreBackgroundImage = 'Tbgr'; 63 64 class BackgroundImage { 65 // This class knows everything about which bitmap to use for a given 66 // view and how. 67 // Unlike other windows, the Desktop window can have different backgrounds 68 // for each workspace 69 public: 70 71 enum Mode { 72 kAtOffset, 73 kCentered, // only works on Desktop 74 kScaledToFit, // only works on Desktop 75 kTiled 76 }; 77 78 class BackgroundImageInfo { 79 // element of the per-workspace list 80 public: 81 BackgroundImageInfo(uint32 workspace, BBitmap* bitmap, Mode mode, 82 BPoint offset, bool textWidgetOutline); 83 ~BackgroundImageInfo(); 84 85 uint32 fWorkspace; 86 BBitmap* fBitmap; 87 Mode fMode; 88 BPoint fOffset; 89 bool fTextWidgetOutline; 90 }; 91 92 static BackgroundImage* GetBackgroundImage(const BNode* node, 93 bool isDesktop); 94 // create a BackgroundImage object by reading it from a node 95 virtual ~BackgroundImage(); 96 97 void Show(BView* view, int32 workspace); 98 // display the right background for a given workspace 99 void Remove(); 100 // remove the background from it's current view 101 102 void WorkspaceActivated(BView* view, int32 workspace, bool state); 103 // respond to a workspace change 104 void ScreenChanged(BRect rect, color_space space); 105 // respond to a screen size change 106 static BackgroundImage* Refresh(BackgroundImage* oldBackgroundImage, 107 const BNode* fromNode, bool desktop, BPoseView* poseView); 108 // respond to a background image setting change 109 110 private: 111 BackgroundImageInfo* ImageInfoForWorkspace(int32) const; 112 void Show(BackgroundImageInfo*, BView* view); 113 114 BackgroundImage(const BNode*, bool); 115 // no public constructor, GetBackgroundImage factory function is 116 // used instead 117 118 void Add(BackgroundImageInfo*); 119 120 float BRectRatio(BRect rect); 121 float BRectHorizontalOverlap(BRect hostRect, BRect resizedRect); 122 float BRectVerticalOverlap(BRect hostRect, BRect resizedRect); 123 124 bool fIsDesktop; 125 BNode fDefinedByNode; 126 BView* fView; 127 BackgroundImageInfo* fShowingBitmap; 128 129 BObjectList<BackgroundImageInfo> fBitmapForWorkspaceList; 130 }; 131 132 } // namespace BPrivate 133 134 using namespace BPrivate; 135 136 137 #endif // _BACKGROUND_IMAGE_H 138