axmol/cocos/platform/mac/CCDevice-mac.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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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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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"

NS_CC_BEGIN

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 CGSize _calculateStringSize(NSString *str, id font, CGSize *constrainSize)
{
    CGSize textRect = CGSizeZero;
    textRect.width = constrainSize->width > 0 ? constrainSize->width
    : 0x7fffffff;
    textRect.height = constrainSize->height > 0 ? constrainSize->height
    : 0x7fffffff;
    
    CGSize dim;
    NSDictionary *attibutes = @{NSFontAttributeName:font};
    dim = [str boundingRectWithSize:textRect options:(NSStringDrawingOptions)(NSStringDrawingUsesLineFragmentOrigin) attributes:attibutes context:nil].size;
    
    dim.width = ceilf(dim.width);
    dim.height = ceilf(dim.height);
    
    return dim;
}

static bool _initWithString(const char * text, Device::TextAlign align, const char * fontName, int size, tImageInfo* info, const Color3B* fontColor, int fontAlpha)
{
    bool ret = false;
    
    CCASSERT(text, "Invalid text");
    CCASSERT(info, "Invalid info");
    
    do {
        NSString * string  = [NSString stringWithUTF8String:text];
        NSString * fntName = [NSString stringWithUTF8String:fontName];
        fntName = [[fntName lastPathComponent] stringByDeletingPathExtension];
        
        // font
        NSFont *font = [[NSFontManager sharedFontManager]
                        fontWithFamily:fntName
                        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 (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
        unsigned horiFlag = (int)align & 0x0f;
        NSTextAlignment textAlign = NSLeftTextAlignment;
        switch (horiFlag) {
            case 2:
                textAlign = NSRightTextAlignment;
                break;
            case 3:
                textAlign = NSCenterTextAlignment;
                break;
            default:
                break;
        }
        
        NSMutableParagraphStyle *paragraphStyle = [[[NSMutableParagraphStyle alloc] init] autorelease];
        [paragraphStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]];
        [paragraphStyle setLineBreakMode:NSLineBreakByWordWrapping];
        [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 = _calculateStringSize(string, font, &dimensions);
        // 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 = 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;
        }
        
        CGFloat yPadding = 0.f;
        unsigned vertFlag = ((int)align >> 4) & 0x0f;
        switch (vertFlag) {
            // align to top
            case 1: yPadding = dimensions.height - realDimensions.height; break;
            // align to bottom
            case 2: yPadding = 0.f; break;
            // align to center
            case 3: yPadding = (dimensions.height - realDimensions.height) / 2.0f; break;
            default: break;
        }
        
        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))
        {
            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)
{
    CC_UNUSED_PARAM(value);
}

void Device::vibrate(float duration)
{
    CC_UNUSED_PARAM(duration);
}

NS_CC_END

#endif // CC_TARGET_PLATFORM == CC_PLATFORM_MAC