ANPPaint.cpp

/*
 * Copyright 2008, The Android Open Source Project
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * 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 THE COPYRIGHT HOLDERS ``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 THE COPYRIGHT OWNER 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.
 */

// must include config.h first for webkit to fiddle with new/delete
#include "SkANP.h"
#include "SkTypeface.h"

static ANPPaint* anp_newPaint() {
    return new ANPPaint;
}

static void anp_deletePaint(ANPPaint* paint) {
    delete paint;
}

static ANPPaintFlags anp_getFlags(const ANPPaint* paint) {
    return paint->getFlags();
}

static void anp_setFlags(ANPPaint* paint, ANPPaintFlags flags) {
    paint->setFlags(flags);
}

static ANPColor anp_getColor(const ANPPaint* paint) {
    return paint->getColor();
}

static void anp_setColor(ANPPaint* paint, ANPColor color) {
    paint->setColor(color);
}

static ANPPaintStyle anp_getStyle(const ANPPaint* paint) {
    return paint->getStyle();
}

static void anp_setStyle(ANPPaint* paint, ANPPaintStyle style) {
    paint->setStyle(static_cast<SkPaint::Style>(style));
}

static float anp_getStrokeWidth(const ANPPaint* paint) {
    return SkScalarToFloat(paint->getStrokeWidth());
}

static float anp_getStrokeMiter(const ANPPaint* paint) {
    return SkScalarToFloat(paint->getStrokeMiter());
}

static ANPPaintCap anp_getStrokeCap(const ANPPaint* paint) {
    return paint->getStrokeCap();
}

static ANPPaintJoin anp_getStrokeJoin(const ANPPaint* paint) {
    return paint->getStrokeJoin();
}

static void anp_setStrokeWidth(ANPPaint* paint, float width) {
    paint->setStrokeWidth(SkFloatToScalar(width));
}

static void anp_setStrokeMiter(ANPPaint* paint, float miter) {
    paint->setStrokeMiter(SkFloatToScalar(miter));
}

static void anp_setStrokeCap(ANPPaint* paint, ANPPaintCap cap) {
    paint->setStrokeCap(static_cast<SkPaint::Cap>(cap));
}

static void anp_setStrokeJoin(ANPPaint* paint, ANPPaintJoin join) {
    paint->setStrokeJoin(static_cast<SkPaint::Join>(join));
}

static ANPTextEncoding anp_getTextEncoding(const ANPPaint* paint) {
    return paint->getTextEncoding();
}

static ANPPaintAlign anp_getTextAlign(const ANPPaint* paint) {
    return paint->getTextAlign();
}

static float anp_getTextSize(const ANPPaint* paint) {
    return SkScalarToFloat(paint->getTextSize());
}

static float anp_getTextScaleX(const ANPPaint* paint) {
    return SkScalarToFloat(paint->getTextScaleX());
}

static float anp_getTextSkewX(const ANPPaint* paint) {
    return SkScalarToFloat(paint->getTextSkewX());
}

static ANPTypeface* anp_getTypeface(const ANPPaint* paint) {
    return reinterpret_cast<ANPTypeface*>(paint->getTypeface());
}

static void anp_setTextEncoding(ANPPaint* paint, ANPTextEncoding encoding) {
    paint->setTextEncoding(static_cast<SkPaint::TextEncoding>(encoding));
}

static void anp_setTextAlign(ANPPaint* paint, ANPPaintAlign align) {
    paint->setTextAlign(static_cast<SkPaint::Align>(align));
}

static void anp_setTextSize(ANPPaint* paint, float textSize) {
    paint->setTextSize(SkFloatToScalar(textSize));
}

static void anp_setTextScaleX(ANPPaint* paint, float scaleX) {
    paint->setTextScaleX(SkFloatToScalar(scaleX));
}

static void anp_setTextSkewX(ANPPaint* paint, float skewX) {
    paint->setTextSkewX(SkFloatToScalar(skewX));
}

static void anp_setTypeface(ANPPaint* paint, ANPTypeface* tf) {
    paint->setTypeface(tf);
}

static float anp_measureText(ANPPaint* paint, const void* text,
                             uint32_t byteLength, ANPRectF* bounds) {
    SkScalar w = paint->measureText(text, byteLength,
                                    reinterpret_cast<SkRect*>(bounds));
    return SkScalarToFloat(w);
}

/** Return the number of unichars specifed by the text.
 If widths is not null, returns the array of advance widths for each
 unichar.
 If bounds is not null, returns the array of bounds for each unichar.
 */
static int anp_getTextWidths(ANPPaint* paint, const void* text,
                       uint32_t byteLength, float widths[], ANPRectF bounds[]) {
    return paint->getTextWidths(text, byteLength, widths,
                                reinterpret_cast<SkRect*>(bounds));
}

static float anp_getFontMetrics(ANPPaint* paint, ANPFontMetrics* metrics) {
    SkPaint::FontMetrics fm;
    SkScalar spacing = paint->getFontMetrics(&fm);
    if (metrics) {
        metrics->fTop = SkScalarToFloat(fm.fTop);
        metrics->fAscent = SkScalarToFloat(fm.fAscent);
        metrics->fDescent = SkScalarToFloat(fm.fDescent);
        metrics->fBottom = SkScalarToFloat(fm.fBottom);
        metrics->fLeading = SkScalarToFloat(fm.fLeading);
    }
    return SkScalarToFloat(spacing);
}

///////////////////////////////////////////////////////////////////////////////

#define ASSIGN(obj, name)   (obj)->name = anp_##name

void InitPaintInterface(ANPPaintInterfaceV0* i) {
    ASSIGN(i, newPaint);
    ASSIGN(i, deletePaint);
    ASSIGN(i, getFlags);
    ASSIGN(i, setFlags);
    ASSIGN(i, getColor);
    ASSIGN(i, setColor);
    ASSIGN(i, getStyle);
    ASSIGN(i, setStyle);
    ASSIGN(i, getStrokeWidth);
    ASSIGN(i, getStrokeMiter);
    ASSIGN(i, getStrokeCap);
    ASSIGN(i, getStrokeJoin);
    ASSIGN(i, setStrokeWidth);
    ASSIGN(i, setStrokeMiter);
    ASSIGN(i, setStrokeCap);
    ASSIGN(i, setStrokeJoin);
    ASSIGN(i, getTextEncoding);
    ASSIGN(i, getTextAlign);
    ASSIGN(i, getTextSize);
    ASSIGN(i, getTextScaleX);
    ASSIGN(i, getTextSkewX);
    ASSIGN(i, getTypeface);
    ASSIGN(i, setTextEncoding);
    ASSIGN(i, setTextAlign);
    ASSIGN(i, setTextSize);
    ASSIGN(i, setTextScaleX);
    ASSIGN(i, setTextSkewX);
    ASSIGN(i, setTypeface);
    ASSIGN(i, measureText);
    ASSIGN(i, getTextWidths);
    ASSIGN(i, getFontMetrics);
}