/*

 * Copyright (C) 2007 Apple Inc.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

 */

#include "config.h"

#include "WebKitGraphics.h"

#include "WebKit.h"

#include "WebKitDLL.h"

#pragma warning(push, 0)

#include <WebCore/CharacterNames.h>

#include <WebCore/Font.h>

#include <WebCore/FontDescription.h>

#include <WebCore/GraphicsContext.h>

#include <WebCore/PlatformString.h>

#include <WebCore/StringTruncator.h>

#include <WebCore/WebCoreTextRenderer.h>

#include <CoreGraphics/CoreGraphics.h>

#pragma warning(pop)

#include <WebKitSystemInterface/WebKitSystemInterface.h>

using namespace WebCore;

static Font makeFont(const WebFontDescription& description)

{

    AtomicString::init();

    String fontFamilyString(description.family, description.familyLength);

    FontDescription f;

    FontFamily family;

    family.setFamily(fontFamilyString);

    f.setFamily(family);

    f.setSpecifiedSize(description.size);

    f.setComputedSize(description.size);

    f.setItalic(description.italic);

    f.setBold(description.bold);

    f.setIsAbsoluteSize(true);

    Font font(f, 0, 0);

    font.update();

    return font;

}

void DrawTextAtPoint(CGContextRef cgContext, LPCTSTR text, int length, POINT point, const WebFontDescription& description, CGColorRef color, int underlinedIndex, bool drawAsPassword)

{

    GraphicsContext context(cgContext);

    ASSERT(CGColorGetNumberOfComponents(color) == 4);   // this code assumes the CGColorRef has 4 components

    const CGFloat* components = CGColorGetComponents(color);

    Color textColor((int)(components[0] * 255), (int)(components[1] * 255), (int)(components[2] * 255), (int)(components[3] * 255));

    String drawString(text, length);

    if (drawAsPassword)

        drawString = drawString.impl()->secure(WebCore::bullet);

    WebCoreDrawTextAtPoint(context, drawString, point, makeFont(description), textColor, underlinedIndex);

}

void WebDrawText(WebTextRenderInfo* info)

{

    if (!info || info->structSize != sizeof(WebTextRenderInfo) || !info->cgContext || !info->description)

        return;

    int oldFontSmoothingLevel = -1;

    if (info->overrideSmoothingLevel >= 0) {

        oldFontSmoothingLevel = wkGetFontSmoothingLevel();

        wkSetFontSmoothingLevel(info->overrideSmoothingLevel);

    }

    DrawTextAtPoint(info->cgContext, info->text, info->length, info->pt, *(info->description), info->color, info->underlinedIndex, info->drawAsPassword);

    if (info->overrideSmoothingLevel >= 0)

        wkSetFontSmoothingLevel(oldFontSmoothingLevel);

}

float TextFloatWidth(LPCTSTR text, int length, const WebFontDescription& description)

{

    return WebCoreTextFloatWidth(String(text, length), makeFont(description));

}

void FontMetrics(const WebFontDescription& description, int* ascent, int* descent, int* lineSpacing)

{

    if (!ascent && !descent && !lineSpacing)

        return;

    Font font(makeFont(description));

    if (ascent)

        *ascent = font.ascent();

    if (descent)

        *descent = font.descent();

    if (lineSpacing)

        *lineSpacing = font.lineSpacing();

}

void CenterTruncateStringToWidth(LPCTSTR text, int length, const WebFontDescription& description, float width, WCHAR* buffer)

{

    ASSERT(buffer);

    String result = StringTruncator::centerTruncate(String(text, length), width, makeFont(description), false);

    memcpy(buffer, result.characters(), result.length() * sizeof(UChar));

    buffer[result.length()] = '\0';

}

void RightTruncateStringToWidth(LPCTSTR text, int length, const WebFontDescription& description, float width, WCHAR* buffer)

{

    ASSERT(buffer);

    String result = StringTruncator::rightTruncate(String(text, length), width, makeFont(description), false);

    memcpy(buffer, result.characters(), result.length() * sizeof(UChar));

    buffer[result.length()] = '\0';

}