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// -*- Mode: ObjC; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
//
// This file is part of the LibreOffice project.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#import "MLORenderBuffer.h"
#import "MLORenderManager_Impl.h"
#import "mlo_utils.h"
#import <QuartzCore/QuartzCore.h>
#include <touch/touch.h>
@interface MLORenderBuffer ()
@property MLORenderManager * manager;
@end
static const CGFloat
MIN_AVERAGE_RENDER_TIME_THRESHOLD=1.0f/100.0f,
MIN_FPS=10.0f;
static const NSTimeInterval SCALING_ANIMATION_DURATION = 0.02f;
static CGFloat averageFps,maxFps;
@implementation MLORenderBuffer
-(id)initWithArrayIndex:(NSInteger) index renderManager:(MLORenderManager *) manager{
self= [self init];
if(self){
self.index = index;
self.manager = manager;
self.backgroundColor = [UIColor whiteColor];
self.previous = nil;
}
return self;
}
-(void)hide{
self.alpha = 0;
[self resetTransform];
}
-(void)setNeedsDisplayInRect:(CGRect)rect{
[self resetTransform];
[super setNeedsDisplayInRect:rect];
}
-(void) resetTransform{
if(self.frame.origin.x ||self.frame.origin.y ){
self.frame = CGRectMake(0,0,_manager.bufferFrame.size.width,_manager.bufferFrame.size.height);
}
}
- (void)drawRect:(CGRect)rect
{
if(ENABLE_LO_DESKTOP){
CGContextRef context = UIGraphicsGetCurrentContext();
//rect = self.frame;
LOG_RECT(rect, @"drawRect");
CGContextSaveGState(context);
CGContextSetFillColorWithColor(context,[UIColor whiteColor].CGColor);
CGContextTranslateCTM(context, 0, _manager.bufferFrame.size.height);
CGContextScaleCTM(context, 1, -1);
CGContextScaleCTM(context, 1, 1);
NSDate *startDate = [NSDate date];
[_manager loRenderWillBegin];
touch_lo_render_windows(context, rect.origin.y, rect.origin.y, rect.size.width, rect.size.height);
CGContextRestoreGState(context);
CGFloat duration = [[NSDate date] timeIntervalSinceDate: startDate];
maxFps = max(maxFps,1.0f/duration);
static float totalTime = 0,counter = 0;
totalTime +=duration;
counter++;
CGFloat averageTime = totalTime / counter;
if(averageTime >MIN_AVERAGE_RENDER_TIME_THRESHOLD){
averageFps = 1.0f/ averageTime;
}
if(LOG_DRAW_RECT){
NSLog(@"drawRect: lo_render_windows: time=%f sec, average=%f sec, fps=%f",
duration, averageTime, averageFps);
}
if(_manager.currentGesture != PINCH){
[_manager swapPreviousBuffer:_previous withNextBuffer:self];
}
}
}
+(CGFloat) getAverageFps{
return max(averageFps, MIN_FPS);
}
+(CGFloat) getMaxFps{
return max(maxFps, MIN_FPS);
}
@end
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