// This file is part of BOINC. // http://boinc.berkeley.edu // Copyright (C) 2008 University of California // // BOINC is free software; you can redistribute it and/or modify it // under the terms of the GNU Lesser General Public License // as published by the Free Software Foundation, // either version 3 of the License, or (at your option) any later version. // // BOINC is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. // See the GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with BOINC. If not, see . // // Mac_Saver_ModuleView.m // BOINC_Saver_Module // #import "Mac_Saver_ModuleView.h" #include #include void print_to_log_file(const char *format, ...); void strip_cr(char *buf); int gGoToBlank; // True if we are to blank the screen int gBlankingTime; // Delay in minutes before blanking the screen NSString *gPathToBundleResources = NULL; NSString *mBundleID = NULL; // our bundle ID NSImage *gBOINC_Logo = NULL; int gTopWindowListIndex = -1; NSRect gMovingRect; float gImageXIndent; float gTextBoxHeight; NSPoint gCurrentPosition; NSPoint gCurrentDelta; ATSUStyle theStyle = NULL; ATSUFontID theFontID; Fixed atsuSize; char myFontName[] = "Helvetica"; //char myFontName[] = "Lucida Blackletter"; ATSUAttributeTag theTags[] = { kATSUFontTag, kATSUSizeTag }; ByteCount theSizes[] = { sizeof (ATSUFontID), sizeof(Fixed) }; ATSUAttributeValuePtr theValues[] = { &theFontID, &atsuSize }; CGContextRef myContext; bool isErased; #define TEXTBOXMINWIDTH 400.0 #define MINTEXTBOXHEIGHT 40.0 #define MAXTEXTBOXHEIGHT 300.0 #define TEXTBOXTOPBORDER 15 #define SAFETYBORDER 20.0 #define MINDELTA 8 #define MAXDELTA 16 int signof(float x) { return (x > 0.0 ? 1 : -1); } @implementation BOINC_Saver_ModuleView - (id)initWithFrame:(NSRect)frame isPreview:(BOOL)isPreview { self = [ super initWithFrame:frame isPreview:isPreview ]; return self; } // If there are multiple displays, this may get called // multiple times (once for each display), so we need to guard // against any problems that may cause. - (void)startAnimation { NSBundle * myBundle; OSStatus err; int newFrequency; if (gBOINC_Logo == NULL) { if (self) { myBundle = [ NSBundle bundleForClass:[self class]]; // grab the screensaver defaults if (mBundleID == NULL) { mBundleID = [ myBundle bundleIdentifier ]; } // Path to our copy of switcher utility application in this screensaver bundle if (gPathToBundleResources == NULL) { gPathToBundleResources = [ myBundle resourcePath ]; } ScreenSaverDefaults *defaults = [ ScreenSaverDefaults defaultsForModuleWithName:mBundleID ]; // try to load the version key, used to see if we have any saved settings mVersion = [defaults floatForKey:@"version"]; if (!mVersion) { // no previous settings so define our defaults mVersion = 1; gGoToBlank = NO; gBlankingTime = 1; // write out the defaults [ defaults setInteger:mVersion forKey:@"version" ]; [ defaults setInteger:gGoToBlank forKey:@"GoToBlank" ]; [ defaults setInteger:gBlankingTime forKey:@"BlankingTime" ]; // synchronize [defaults synchronize]; } // set defaults... gGoToBlank = [ defaults integerForKey:@"GoToBlank" ]; gBlankingTime = [ defaults integerForKey:@"BlankingTime" ]; [ self setAutoresizesSubviews:YES ]; // make sure the subview resizes. NSString *fileName = [[ NSBundle bundleForClass:[ self class ]] pathForImageResource:@"boinc_ss_logo" ]; if (! fileName) { // What should we do in this case? return; } gBOINC_Logo = [[ NSImage alloc ] initWithContentsOfFile:fileName ]; gMovingRect.origin.x = 0.0; gMovingRect.origin.y = 0.0; gMovingRect.size = [gBOINC_Logo size]; if (gMovingRect.size.width < TEXTBOXMINWIDTH) { gImageXIndent = (TEXTBOXMINWIDTH - gMovingRect.size.width) / 2; gMovingRect.size.width = TEXTBOXMINWIDTH; } else { gImageXIndent = 0.0; } gTextBoxHeight = MINTEXTBOXHEIGHT; gMovingRect.size.height += gTextBoxHeight; gCurrentPosition.x = SAFETYBORDER + 1; gCurrentPosition.y = SAFETYBORDER + 1 + gTextBoxHeight; gCurrentDelta.x = 1.0; gCurrentDelta.y = 1.0; [ self setAnimationTimeInterval:1/8.0 ]; ATSUFindFontFromName(myFontName, strlen(myFontName), kFontFamilyName, kFontMacintoshPlatform, kFontNoScriptCode, kFontNoLanguageCode, &theFontID); err = ATSUCreateStyle(&theStyle); atsuSize = Long2Fix (20); err = ATSUSetAttributes(theStyle, 2, theTags, theSizes, theValues); } } [ super startAnimation ]; if ( [ self isPreview ] ) { [ self setAnimationTimeInterval:1.0/8.0 ]; return; } newFrequency = initBOINCSaver(); if (newFrequency) [ self setAnimationTimeInterval:1.0/newFrequency ]; } // If there are multiple displays, this may get called // multiple times (once for each display), so we need to guard // against any problems that may cause. - (void)stopAnimation { [ super stopAnimation ]; if ( ! [ self isPreview ] ) { closeBOINCSaver(); } gTopWindowListIndex = -1; if (gBOINC_Logo) { [ gBOINC_Logo release ]; } gBOINC_Logo = NULL; if (theStyle) { ATSUDisposeStyle(theStyle); } theStyle = NULL; } // If there are multiple displays, this may get called // multiple times (once for each display), so we need to guard // against any problems that may cause. - (void)drawRect:(NSRect)rect { [ super drawRect:rect ]; // optionally draw here } // If there are multiple displays, this may get called // multiple times (once for each display), so we need to guard // against any problems that may cause. - (void)animateOneFrame { int newFrequency = 0; int coveredFreq = 0; NSRect theFrame = [ self frame ]; int myWindowNumber; int windowList[20]; int i, n; NSRect currentDrawingRect, eraseRect; NSPoint imagePosition; Rect r; char *msg; CFStringRef cf_msg; AbsoluteTime timeToUnblock, frameStartTime = UpTime(); OSStatus err; if ([ self isPreview ]) { #if 1 // Currently drawRect just draws our logo in the preview window NSString *fileName = [[ NSBundle bundleForClass:[ self class ]] pathForImageResource:@"boinc" ]; if (fileName) { NSImage *myImage = [[ NSImage alloc ] initWithContentsOfFile:fileName ]; [ myImage setScalesWhenResized:YES ]; [ myImage setSize:theFrame.size ]; [ myImage compositeToPoint:NSZeroPoint operation:NSCompositeSourceOver ]; [ myImage release ]; } [ self setAnimationTimeInterval:1/1.0 ]; #else // Code for possible future use if we want to draw more in preview myContext = [[NSGraphicsContext currentContext] graphicsPort]; drawPreview(myContext); [ self setAnimationTimeInterval:1/30.0 ]; #endif return; } myContext = [[NSGraphicsContext currentContext] graphicsPort]; // [myContext retain]; NSWindow *myWindow = [ self window ]; NSRect windowFrame = [ myWindow frame ]; if ( (windowFrame.origin.x != 0) || (windowFrame.origin.y != 0) ) { // Hide window on second display to aid in debugging #ifdef _DEBUG [ myWindow setLevel:kCGMinimumWindowLevel ]; #endif return; // We draw only to main screen } NSRect viewBounds = [self bounds]; newFrequency = getSSMessage(&msg, &coveredFreq); // NOTE: My tests seem to confirm that the top window is always the first // window returned by NSWindowList under OS 10.5 and the second window // returned by NSWindowList under OS 10.3.9 and OS 10.4. However, Apple's // documentation is unclear whether we can depend on this. So I have // added some safety by doing two things: // [1] Only use the NSWindowList test when we have started project graphics. // [2] Assume that our window is covered 45 seconds after starting project // graphics even if the NSWindowList test did not indicate that is so. // // getSSMessage() returns a non-zero value for coveredFreq only if we have started // project graphics. // // If we should use a different frequency when our window is covered by another // window, then check whether there is a window at a higher z-level than ours. // Assuming our window(s) are initially the top window(s), // determine our position in the window list when no graphics // applications have covered us. if (gTopWindowListIndex < 0) { myWindowNumber = [ myWindow windowNumber ]; NSWindowList(20, windowList); NSCountWindows(&n); if (n > 20) n = 20; for (i=0; i= (viewBounds.origin.x + viewBounds.size.width - SAFETYBORDER) ) { gCurrentDelta.x = -(float)SSRandomIntBetween(MINDELTA, MAXDELTA) / 16.; gCurrentDelta.y = (float)(SSRandomIntBetween(MINDELTA, MAXDELTA) * signof(gCurrentDelta.y)) / 16.; } if (currentDrawingRect.origin.y <= SAFETYBORDER) { gCurrentDelta.y = (float)SSRandomIntBetween(MINDELTA, MAXDELTA) / 16.; gCurrentDelta.x = (float)(SSRandomIntBetween(MINDELTA, MAXDELTA) * signof(gCurrentDelta.x)) / 16.; } if ( (currentDrawingRect.origin.y + currentDrawingRect.size.height) >= (viewBounds.origin.y + viewBounds.size.height - SAFETYBORDER) ) { gCurrentDelta.y = -(float)SSRandomIntBetween(MINDELTA, MAXDELTA) / 16.; gCurrentDelta.x = (float)(SSRandomIntBetween(MINDELTA, MAXDELTA) * signof(gCurrentDelta.x)) / 16.; } #if 0 // For testing gCurrentDelta.x = 0; gCurrentDelta.y = 0; #endif if (!isErased) { [[NSColor blackColor] set]; // Erasing only 2 small rectangles reduces screensaver's CPU usage by about 25% imagePosition.x = (float) ((int)gCurrentPosition.x + gImageXIndent); imagePosition.y = (float) (int)gCurrentPosition.y; eraseRect.origin.y = imagePosition.y; eraseRect.size.height = currentDrawingRect.size.height - gTextBoxHeight; if (gCurrentDelta.x > 0) { eraseRect.origin.x = imagePosition.x - 1; eraseRect.size.width = gCurrentDelta.x + 1; } else { eraseRect.origin.x = currentDrawingRect.origin.x + currentDrawingRect.size.width - gImageXIndent + gCurrentDelta.x - 1; eraseRect.size.width = -gCurrentDelta.x + 1; } eraseRect = NSInsetRect(eraseRect, -1, -1); NSRectFill(eraseRect); eraseRect.origin.x = imagePosition.x; eraseRect.size.width = currentDrawingRect.size.width - gImageXIndent - gImageXIndent; if (gCurrentDelta.y > 0) { eraseRect.origin.y = imagePosition.y; eraseRect.size.height = gCurrentDelta.y + 1; } else { eraseRect.origin.y = imagePosition.y + currentDrawingRect.size.height - gTextBoxHeight - 1; eraseRect.size.height = -gCurrentDelta.y + 1; } eraseRect = NSInsetRect(eraseRect, -1, -1); NSRectFill(eraseRect); eraseRect = currentDrawingRect; eraseRect.size.height = gTextBoxHeight; eraseRect = NSInsetRect(eraseRect, -1, -1); NSRectFill(eraseRect); isErased = true; } // Get the new drawing area gCurrentPosition.x += gCurrentDelta.x; gCurrentPosition.y += gCurrentDelta.y; imagePosition.x = (float) ((int)gCurrentPosition.x + gImageXIndent); imagePosition.y = (float) (int)gCurrentPosition.y; // Calculate QuickDraw Rect for current text box r.left = (float) ((int)gCurrentPosition.x); r.right = r.left + gMovingRect.size.width; r.top = viewBounds.size.height - imagePosition.y; r.bottom = r.top + (int)MAXTEXTBOXHEIGHT; r.top += TEXTBOXTOPBORDER; // Add a few pixels space below image TXNTextBoxOptionsData theOptions = {kTXNUseCGContextRefMask | kTXNSetFlushnessMask, kATSUCenterAlignment, kATSUNoJustification, 0, myContext }; cf_msg = CFStringCreateWithCString(NULL, msg, kCFStringEncodingMacRoman); [[NSColor whiteColor] set]; [ gBOINC_Logo compositeToPoint:imagePosition operation:NSCompositeCopy ]; err = TXNDrawCFStringTextBox ( cf_msg, &r, theStyle, &theOptions); gTextBoxHeight = r.bottom - r.top + TEXTBOXTOPBORDER; gMovingRect.size.height = [gBOINC_Logo size].height + gTextBoxHeight; CFRelease(cf_msg); isErased = false; } else { // Empty or NULL message if (!isErased) { eraseRect = NSInsetRect(currentDrawingRect, -1, -1); [[NSColor blackColor] set]; isErased = true; NSRectFill(eraseRect); gTextBoxHeight = MAXTEXTBOXHEIGHT; gMovingRect.size.height = [gBOINC_Logo size].height + gTextBoxHeight; } } if (newFrequency) [ self setAnimationTimeInterval:(1.0/newFrequency) ]; // setAnimationTimeInterval does not seem to be working, so we // throttle the screensaver directly here. timeToUnblock = AddDurationToAbsolute(durationSecond/newFrequency, frameStartTime); MPDelayUntil(&timeToUnblock); } - (BOOL)hasConfigureSheet { return YES; } // Display the configuration sheet for the user to choose their settings - (NSWindow*)configureSheet { // if we haven't loaded our configure sheet, load the nib named MyScreenSaver.nib if (!mConfigureSheet) [ NSBundle loadNibNamed:@"BOINCSaver" owner:self ]; // set the UI state [ mGoToBlankCheckbox setState:gGoToBlank ]; mBlankingTimeString = [[ NSString alloc ] initWithFormat:@"%d", gBlankingTime ]; [ mBlankingTimeTextField setStringValue:mBlankingTimeString ]; return mConfigureSheet; } // Called when the user clicked the SAVE button - (IBAction) closeSheetSave:(id) sender { // get the defaults ScreenSaverDefaults *defaults = [ ScreenSaverDefaults defaultsForModuleWithName:mBundleID ]; // save the UI state gGoToBlank = [ mGoToBlankCheckbox state ]; mBlankingTimeString = [ mBlankingTimeTextField stringValue ]; gBlankingTime = [ mBlankingTimeString intValue ]; // write the defaults [ defaults setInteger:gGoToBlank forKey:@"GoToBlank" ]; [ defaults setInteger:gBlankingTime forKey:@"BlankingTime" ]; // synchronize [ defaults synchronize ]; // end the sheet [ NSApp endSheet:mConfigureSheet ]; } // Called when the user clicked the CANCEL button - (IBAction) closeSheetCancel:(id) sender { // nothing to configure [ NSApp endSheet:mConfigureSheet ]; } @end