axmol/cocos/2d/platform/mac/CCDevice.mm

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2014 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/

#include "base/CCPlatformConfig.h"
#if CC_TARGET_PLATFORM == CC_PLATFORM_MAC

#include "2d/platform/CCDevice.h"
#include <Foundation/Foundation.h>
#include <Cocoa/Cocoa.h>
#include <string>
#include "base/ccTypes.h"

NS_CC_BEGIN

int Device::getDPI()
{
//TODO: 
    return 160;
}

void Device::setAccelerometerEnabled(bool isEnabled)
{

}

void Device::setAccelerometerInterval(float interval)
{

}

typedef struct
{
    int height;
    int width;
    bool        hasAlpha;
    bool        isPremultipliedAlpha;
    unsigned char*  data;
} tImageInfo;

static bool _initWithString(const char * text, Device::TextAlign align, const char * fontName, int size, tImageInfo* info, Color3B* strokeColor)
{
    bool ret = false;
    
	CCASSERT(text, "Invalid pText");
	CCASSERT(info, "Invalid pInfo");
	
	do {
		NSString * string  = [NSString stringWithUTF8String:text];
		
		// font
		NSFont *font = [[NSFontManager sharedFontManager]
                        fontWithFamily:[NSString stringWithUTF8String:fontName]
						traits:NSUnboldFontMask | NSUnitalicFontMask
                        weight:0
                        size:size];
		
		if (font == nil) {
			font = [[NSFontManager sharedFontManager]
					fontWithFamily:@"Arial"
					traits:NSUnboldFontMask | NSUnitalicFontMask
					weight:0
					size:size];
		}
		CC_BREAK_IF(!font);
		
		// color
		NSColor* foregroundColor;
		if (strokeColor) {
			foregroundColor = [NSColor colorWithDeviceRed:strokeColor->r/255.0 green:strokeColor->g/255.0 blue:strokeColor->b/255.0 alpha:1];
		} else {
			foregroundColor = [NSColor whiteColor];
		}
		
		
		// alignment, linebreak
		unsigned horiFlag = (int)align & 0x0f;
		unsigned vertFlag = ((int)align >> 4) & 0x0f;
		NSTextAlignment textAlign = (2 == horiFlag) ? NSRightTextAlignment
        : (3 == horiFlag) ? NSCenterTextAlignment
        : NSLeftTextAlignment;
		
		NSMutableParagraphStyle *paragraphStyle = [[[NSMutableParagraphStyle alloc] init] autorelease];
		[paragraphStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]];
		[paragraphStyle setLineBreakMode:NSLineBreakByCharWrapping];
		[paragraphStyle setAlignment:textAlign];
        
		// attribute
		NSDictionary* tokenAttributesDict = [NSDictionary dictionaryWithObjectsAndKeys:
											 foregroundColor,NSForegroundColorAttributeName,
											 font, NSFontAttributeName,
											 paragraphStyle, NSParagraphStyleAttributeName, nil];
        
        // linebreak
		if (info->width > 0) {
			if ([string sizeWithAttributes:tokenAttributesDict].width > info->width) {
				NSMutableString *lineBreak = [[[NSMutableString alloc] init] autorelease];
				NSUInteger length = [string length];
				NSRange range = NSMakeRange(0, 1);
                CGSize textSize;
				NSUInteger lastBreakLocation = 0;
                NSUInteger insertCount = 0;
				for (NSUInteger i = 0; i < length; i++) {
					range.location = i;
					NSString *character = [string substringWithRange:range];
					[lineBreak appendString:character];
					if ([@"!?.,-= " rangeOfString:character].location != NSNotFound) {
                        lastBreakLocation = i + insertCount;
                    }
                    textSize = [lineBreak sizeWithAttributes:tokenAttributesDict];
                    if(textSize.height > info->height)
                        break;
					if (textSize.width > info->width) {
                        if(lastBreakLocation > 0) {
                            [lineBreak insertString:@"\r" atIndex:lastBreakLocation];
                            lastBreakLocation = 0;
                        }
                        else {
                            [lineBreak insertString:@"\r" atIndex:[lineBreak length] - 1];
                        }
                        insertCount += 1;
					}
				}
                
				string = lineBreak;
			}
		}
        
		NSAttributedString *stringWithAttributes =[[[NSAttributedString alloc] initWithString:string
                                                                                   attributes:tokenAttributesDict] autorelease];
        
		NSSize realDimensions = [stringWithAttributes size];
		// Mac crashes if the width or height is 0
		CC_BREAK_IF(realDimensions.width <= 0 || realDimensions.height <= 0);
        
		CGSize dimensions = CGSizeMake(info->width, info->height);
		
        
		if(dimensions.width <= 0 && dimensions.height <= 0) {
			dimensions.width = realDimensions.width;
			dimensions.height = realDimensions.height;
		} else if (dimensions.height <= 0) {
			dimensions.height = realDimensions.height;
		}
        
		NSInteger POTWide = dimensions.width;
		NSInteger POTHigh = MAX(dimensions.height, realDimensions.height);
		unsigned char*			data;
		//Alignment
        
		CGFloat xPadding = 0;
		switch (textAlign) {
			case NSLeftTextAlignment: xPadding = 0; break;
			case NSCenterTextAlignment: xPadding = (dimensions.width-realDimensions.width)/2.0f; break;
			case NSRightTextAlignment: xPadding = dimensions.width-realDimensions.width; break;
			default: break;
		}
        
		// 1: TOP
		// 2: BOTTOM
		// 3: CENTER
		CGFloat yPadding = (1 == vertFlag || realDimensions.height >= dimensions.height) ? (dimensions.height - realDimensions.height)	// align to top
		: (2 == vertFlag) ? 0																	// align to bottom
		: (dimensions.height - realDimensions.height) / 2.0f;									// align to center
		
		
		NSRect textRect = NSMakeRect(xPadding, POTHigh - dimensions.height + yPadding, realDimensions.width, realDimensions.height);
		//Disable antialias
		
		[[NSGraphicsContext currentContext] setShouldAntialias:NO];
		
		NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize(POTWide, POTHigh)];
        
		[image lockFocus];
        
        // patch for mac retina display and lableTTF
        [[NSAffineTransform transform] set];
		
		//[stringWithAttributes drawAtPoint:NSMakePoint(xPadding, offsetY)]; // draw at offset position
		[stringWithAttributes drawInRect:textRect];
		//[stringWithAttributes drawInRect:textRect withAttributes:tokenAttributesDict];
		NSBitmapImageRep *bitmap = [[NSBitmapImageRep alloc] initWithFocusedViewRect:NSMakeRect (0.0f, 0.0f, POTWide, POTHigh)];
		[image unlockFocus];
		
		data = (unsigned char*) [bitmap bitmapData];  //Use the same buffer to improve the performance.
		
		NSUInteger textureSize = POTWide*POTHigh*4;
		
		unsigned char* dataNew = (unsigned char*)malloc(sizeof(unsigned char) * textureSize);
		if (dataNew) {
			memcpy(dataNew, data, textureSize);
			// output params
			info->width = static_cast<int>(POTWide);
			info->height = static_cast<int>(POTHigh);
			info->data = dataNew;
			info->hasAlpha = true;
			info->isPremultipliedAlpha = true;
			ret = true;
		}
		[bitmap release];
		[image release];
	} while (0);
    return ret;
}

Data Device::getTextureDataForText(const char * text, const FontDefinition& textDefinition, TextAlign align, int &width, int &height, bool& hasPremultipliedAlpha)
{
    Data ret;
    do {
        tImageInfo info = {0};
        info.width = textDefinition._dimensions.width;
        info.height = textDefinition._dimensions.height;
        
        if (! _initWithString(text, align, textDefinition._fontName.c_str(), textDefinition._fontSize, &info, nullptr)) //pStrokeColor))
        {
            break;
        }
        height = (short)info.height;
        width = (short)info.width;
        ret.fastSet(info.data,width * height * 4);
        hasPremultipliedAlpha = true;
    } while (0);
    
    return ret;
}
NS_CC_END

#endif // CC_TARGET_PLATFORM == CC_PLATFORM_MAC