RedCore/cocos2d/cocos/platform/mac/CCDevice-mac.mm

/****************************************************************************
Copyright (c) 2010-2012 cocos2d-x.org
Copyright (c) 2013-2017 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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all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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****************************************************************************/

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

#include "platform/CCDevice.h"
#include <Foundation/Foundation.h>
#include <Cocoa/Cocoa.h>
#include <string>
#include "base/ccTypes.h"
#include "platform/apple/CCDevice-apple.h"

NS_CC_BEGIN

static NSAttributedString* __attributedStringWithFontSize(NSMutableAttributedString* attributedString, CGFloat fontSize)
{
    {
        [attributedString beginEditing];
        
        [attributedString enumerateAttribute:NSFontAttributeName inRange:NSMakeRange(0, attributedString.length) options:0 usingBlock:^(id value, NSRange range, BOOL *stop) {
            
            NSFont* font = value;
            font = [[NSFontManager sharedFontManager] convertFont:font toSize:fontSize];
            
            [attributedString removeAttribute:NSFontAttributeName range:range];
            [attributedString addAttribute:NSFontAttributeName value:font range:range];
        }];
        
        [attributedString endEditing];
    }
    
    return [[attributedString copy] autorelease];
}

int Device::getDPI()
{
    NSScreen *screen = [NSScreen mainScreen];
    NSDictionary *description = [screen deviceDescription];
    NSSize displayPixelSize = [[description objectForKey:NSDeviceSize] sizeValue];
    CGSize displayPhysicalSize = CGDisplayScreenSize([[description objectForKey:@"NSScreenNumber"] unsignedIntValue]);
    
    return ((displayPixelSize.width / displayPhysicalSize.width) * 25.4f);
}

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 NSSize _calculateStringSize(NSAttributedString *str, id font, CGSize *constrainSize, bool enableWrap, int overflow)
{
    NSSize textRect = NSZeroSize;
    textRect.width = constrainSize->width > 0 ? constrainSize->width
    : CGFLOAT_MAX;
    textRect.height = constrainSize->height > 0 ? constrainSize->height
    : CGFLOAT_MAX;
    
    if (overflow == 1) {
        if (!enableWrap) {
            textRect.width = CGFLOAT_MAX;
            textRect.height = CGFLOAT_MAX;
        } else {
            textRect.height = CGFLOAT_MAX;
        }
    }
    
    NSSize dim;
#ifdef __MAC_10_11
    #if __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_11
    dim = [str boundingRectWithSize:textRect options:(NSStringDrawingOptions)(NSStringDrawingUsesLineFragmentOrigin) context:nil].size;
    #else
    dim = [str boundingRectWithSize:textRect options:(NSStringDrawingOptions)(NSStringDrawingUsesLineFragmentOrigin)].size;
    #endif
#else
    dim = [str boundingRectWithSize:textRect options:(NSStringDrawingOptions)(NSStringDrawingUsesLineFragmentOrigin)].size;
#endif
    
    
    dim.width = ceilf(dim.width);
    dim.height = ceilf(dim.height);

    return dim;
}

static NSSize _calculateRealSizeForString(NSAttributedString **str, id font, NSSize constrainSize, bool enableWrap)
{
    CGRect actualSize = CGRectMake(0, 0, constrainSize.width + 1, constrainSize.height + 1);
    int fontSize = [font pointSize];
    fontSize = fontSize + 1;

    if (!enableWrap) {
        while (actualSize.size.width > constrainSize.width ||
               actualSize.size.height > constrainSize.height) {
            fontSize = fontSize - 1;
            if (fontSize < 0) {
                actualSize = CGRectMake(0, 0, 0, 0);
                break;
            }
            
            NSMutableAttributedString *mutableString = [[*str mutableCopy] autorelease];
            *str = __attributedStringWithFontSize(mutableString, fontSize);

#ifdef __MAC_10_11
    #if __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_11
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
    #else
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin].size;
    #endif
#else
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( CGFLOAT_MAX, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin].size;
#endif

            if(fitSize.width == 0 || fitSize.height == 0) continue;
            actualSize.size = fitSize;

            if (constrainSize.width <= 0) {
                constrainSize.width = fitSize.width;
            }
            if (constrainSize.height <= 0){
                constrainSize.height = fitSize.height;
            }
            if(fontSize <= 0){
                break;
            }
        }

    }
    else {
        while (actualSize.size.height > constrainSize.height
               ||actualSize.size.width > constrainSize.width) {
            fontSize = fontSize - 1;
            if (fontSize < 0) {
                actualSize = CGRectMake(0, 0, 0, 0);
                break;
            }
            
            NSMutableAttributedString *mutableString = [[*str mutableCopy] autorelease];
            *str = __attributedStringWithFontSize(mutableString, fontSize);

#ifdef __MAC_10_11
    #if __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_11
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( constrainSize.width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin context:nil].size;
    #else
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( constrainSize.width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin].size;
    #endif
#else
            CGSize fitSize = [*str boundingRectWithSize:CGSizeMake( constrainSize.width, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin].size;
#endif
            
            if(fitSize.width == 0 || fitSize.height == 0) continue;
            actualSize.size = fitSize;
            
            if (constrainSize.width <= 0) {
                constrainSize.width = fitSize.width;
            }
            if (constrainSize.height <= 0){
                constrainSize.height = fitSize.height;
            }
            if(fontSize <= 0){
                break;
            }
        }

    }
    return CGSizeMake(actualSize.size.width, actualSize.size.height);
}

static NSFont* _createSystemFont(const char* fontName, int size)
{
    NSString * fntName = [NSString stringWithUTF8String:fontName];
    fntName = [[fntName lastPathComponent] stringByDeletingPathExtension];
    
    // font
    NSFont *font = [NSFont fontWithName:fntName size:size];
    
    if (font == nil) {
        font = [NSFont systemFontOfSize:size];
    }
    return font;
}


static CGFloat _calculateTextDrawStartHeight(cocos2d::Device::TextAlign align, CGSize realDimensions, CGSize dimensions)
{
    float startH = 0;
    // vertical alignment
    unsigned int vAlignment = ((int)align >> 4) & 0x0F;
    switch (vAlignment) {
            //bottom
        case 1:startH = dimensions.height - realDimensions.height;break;
            //top
        case 2:startH = 0;break;
            //center
        case 3: startH = (dimensions.height - realDimensions.height) / 2;break;
        default:
            break;
    }
    return startH;
}

static bool _initWithString(const char * text, Device::TextAlign align, const char * fontName, int size, tImageInfo* info, const Color3B* fontColor, int fontAlpha, bool enableWrap, int overflow)
{
    bool ret = false;
    
    CCASSERT(text, "Invalid text");
    CCASSERT(info, "Invalid info");
    
    do {
        NSString * string  = [NSString stringWithUTF8String:text];
        CC_BREAK_IF(!string);
        
        id font = _createSystemFont(fontName, size);
        CC_BREAK_IF(!font);
        
        // color
        NSColor* foregroundColor;
        if (fontColor) {
            foregroundColor = [NSColor colorWithDeviceRed:fontColor->r/255.0
                                                    green:fontColor->g/255.0
                                                     blue:fontColor->b/255.0
                                                    alpha:fontAlpha/255.0];
        } else {
            foregroundColor = [NSColor whiteColor];
        }
        
        // alignment
        NSTextAlignment textAlign = FontUtils::_calculateTextAlignment(align);
        
        NSMutableParagraphStyle *paragraphStyle = FontUtils::_calculateParagraphStyle(enableWrap, overflow);
        [paragraphStyle setAlignment:textAlign];
        
        // attribute
        NSDictionary* tokenAttributesDict = [NSDictionary dictionaryWithObjectsAndKeys:
                                             foregroundColor,NSForegroundColorAttributeName,
                                             font, NSFontAttributeName,
                                             paragraphStyle, NSParagraphStyleAttributeName, nil];
        NSAttributedString *stringWithAttributes =[[[NSAttributedString alloc] initWithString:string
                                                                                   attributes:tokenAttributesDict] autorelease];
        
        CGSize dimensions = CGSizeMake(info->width, info->height);

        NSSize realDimensions;
        
        if (overflow == 2) {
            realDimensions = _calculateRealSizeForString(&stringWithAttributes, font, dimensions, enableWrap);
        } else {
            realDimensions = _calculateStringSize(stringWithAttributes, font, &dimensions, enableWrap, overflow);
        }
        

        // Mac crashes if the width or height is 0
        CC_BREAK_IF(realDimensions.width <= 0 || realDimensions.height <= 0);
        
       
        if(dimensions.width <= 0.f) {
            dimensions.width = realDimensions.width;
        }
        if (dimensions.height <= 0.f) {
            dimensions.height = realDimensions.height;
        }
      
        
        //Alignment
        CGFloat xPadding = FontUtils::_calculateTextDrawStartWidth(align, realDimensions, dimensions);
        
        CGFloat yPadding = _calculateTextDrawStartHeight(align, realDimensions, dimensions);
        
        NSInteger POTWide = dimensions.width;
        NSInteger POTHigh = dimensions.height;
        NSRect textRect = NSMakeRect(xPadding, POTHigh - dimensions.height + yPadding,
                                     realDimensions.width, realDimensions.height);
        
        
        [[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 drawInRect:textRect];
        NSBitmapImageRep *bitmap = [[NSBitmapImageRep alloc] initWithFocusedViewRect:NSMakeRect (0.0f, 0.0f, POTWide, POTHigh)];
        [image unlockFocus];
        
        auto data = (unsigned char*) [bitmap bitmapData];  //Use the same buffer to improve the performance.
        
        NSUInteger textureSize = POTWide * POTHigh * 4;
        auto 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, &textDefinition._fontFillColor, textDefinition._fontAlpha, textDefinition._enableWrap, textDefinition._overflow))
        {
            break;
        }
        height = (short)info.height;
        width = (short)info.width;
        ret.fastSet(info.data,width * height * 4);
        hasPremultipliedAlpha = true;
    } while (0);
    
    return ret;
}

void Device::setKeepScreenOn(bool value)
{
}

void Device::vibrate(float duration)
{
}

NS_CC_END

#endif // CC_TARGET_PLATFORM == CC_PLATFORM_MAC