void CanvasRenderingContext2D::setShadow(float width, float height, float blur, const String& color)
{
state().m_shadowOffset = FloatSize(width, height);
state().m_shadowBlur = blur;
state().m_shadowColor = color;
applyShadow();
}
void CanvasRenderingContext2D::clearShadow()
{
state().m_shadowOffset = FloatSize();
state().m_shadowBlur = 0;
state().m_shadowColor = "";
applyShadow();
}
void CanvasRenderingContext2D::setShadowColor(const String& color)
{
state().m_shadowColor = color;
applyShadow();
}
void CanvasRenderingContext2D::setShadowBlur(float blur)
{
state().m_shadowBlur = blur;
applyShadow();
}
void CanvasRenderingContext2D::setShadowOffsetY(float y)
{
state().m_shadowOffset.setHeight(y);
applyShadow();
}
void CanvasRenderingContext2D::setShadowOffsetX(float x)
{
state().m_shadowOffset.setWidth(x);
applyShadow();
}
void Bitmap::drawText(const IntRect &rect, const char *str, int align)
{
guardDisposed();
GUARD_MEGA;
std::string fixed = fixupString(str);
str = fixed.c_str();
if (*str == '\0')
return;
if (str[0] == ' ' && str[1] == '\0')
return;
TTF_Font *font = p->font->getSdlFont();
const Color &fontColor = p->font->getColor();
const Color &outColor = p->font->getOutColor();
SDL_Color c = fontColor.toSDLColor();
c.a = 255;
float txtAlpha = fontColor.norm.w;
SDL_Surface *txtSurf;
if (shState->rtData().config.solidFonts)
txtSurf = TTF_RenderUTF8_Solid(font, str, c);
else
txtSurf = TTF_RenderUTF8_Blended(font, str, c);
p->ensureFormat(txtSurf, SDL_PIXELFORMAT_ABGR8888);
int rawTxtSurfH = txtSurf->h;
if (p->font->getShadow())
applyShadow(txtSurf, *p->format, c);
/* outline using TTF_Outline and blending it together with SDL_BlitSurface
* FIXME: outline is forced to have the same opacity as the font color */
if (p->font->getOutline())
{
SDL_Color co = outColor.toSDLColor();
co.a = 255;
SDL_Surface *outline;
/* set the next font render to render the outline */
TTF_SetFontOutline(font, OUTLINE_SIZE);
if (shState->rtData().config.solidFonts)
outline = TTF_RenderUTF8_Solid(font, str, co);
else
outline = TTF_RenderUTF8_Blended(font, str, co);
p->ensureFormat(outline, SDL_PIXELFORMAT_ABGR8888);
SDL_Rect outRect = {OUTLINE_SIZE, OUTLINE_SIZE, txtSurf->w, txtSurf->h};
SDL_SetSurfaceBlendMode(txtSurf, SDL_BLENDMODE_BLEND);
SDL_BlitSurface(txtSurf, NULL, outline, &outRect);
SDL_FreeSurface(txtSurf);
txtSurf = outline;
/* reset outline to 0 */
TTF_SetFontOutline(font, 0);
}
int alignX = rect.x;
switch (align)
{
default:
case Left :
break;
case Center :
alignX += (rect.w - txtSurf->w) / 2;
break;
case Right :
alignX += rect.w - txtSurf->w;
break;
}
if (alignX < rect.x)
alignX = rect.x;
int alignY = rect.y + (rect.h - rawTxtSurfH) / 2;
float squeeze = (float) rect.w / txtSurf->w;
if (squeeze > 1)
squeeze = 1;
FloatRect posRect(alignX, alignY, txtSurf->w * squeeze, txtSurf->h);
Vec2i gpTexSize;
shState->ensureTexSize(txtSurf->w, txtSurf->h, gpTexSize);
bool fastBlit = !p->touchesTaintedArea(posRect) && txtAlpha == 1.0f;
if (fastBlit)
{
if (squeeze == 1.0f && !shState->config().subImageFix)
{
/* Even faster: upload directly to bitmap texture.
* We have to make sure the posRect lies within the texture
* boundaries or texSubImage will generate errors.
* If it partly lies outside bounds we have to upload
* the clipped visible part of it. */
SDL_Rect btmRect;
btmRect.x = btmRect.y = 0;
btmRect.w = width();
btmRect.h = height();
SDL_Rect txtRect;
txtRect.x = posRect.x;
txtRect.y = posRect.y;
txtRect.w = posRect.w;
txtRect.h = posRect.h;
SDL_Rect inters;
/* If we have no intersection at all,
* there's nothing to upload to begin with */
if (SDL_IntersectRect(&btmRect, &txtRect, &inters))
{
bool subImage = false;
int subSrcX = 0, subSrcY = 0;
if (inters.w != txtRect.w || inters.h != txtRect.h)
{
/* Clip the text surface */
subSrcX = inters.x - txtRect.x;
subSrcY = inters.y - txtRect.y;
subImage = true;
posRect.x = inters.x;
posRect.y = inters.y;
posRect.w = inters.w;
posRect.h = inters.h;
}
TEX::bind(p->gl.tex);
if (!subImage)
{
TEX::uploadSubImage(posRect.x, posRect.y,
posRect.w, posRect.h,
txtSurf->pixels, GL_RGBA);
}
else
{
GLMeta::subRectImageUpload(txtSurf->w, subSrcX, subSrcY,
posRect.x, posRect.y,
posRect.w, posRect.h,
txtSurf, GL_RGBA);
GLMeta::subRectImageEnd();
}
}
}
else
{
/* Squeezing involved: need to use intermediary TexFBO */
TEXFBO &gpTF = shState->gpTexFBO(txtSurf->w, txtSurf->h);
TEX::bind(gpTF.tex);
TEX::uploadSubImage(0, 0, txtSurf->w, txtSurf->h, txtSurf->pixels, GL_RGBA);
GLMeta::blitBegin(p->gl);
GLMeta::blitSource(gpTF);
GLMeta::blitRectangle(IntRect(0, 0, txtSurf->w, txtSurf->h),
posRect, true);
GLMeta::blitEnd();
}
}
else
{
/* Aquire a partial copy of the destination
* buffer we're about to render to */
TEXFBO &gpTex2 = shState->gpTexFBO(posRect.w, posRect.h);
GLMeta::blitBegin(gpTex2);
GLMeta::blitSource(p->gl);
GLMeta::blitRectangle(posRect, Vec2i());
GLMeta::blitEnd();
FloatRect bltRect(0, 0,
(float) (gpTexSize.x * squeeze) / gpTex2.width,
(float) gpTexSize.y / gpTex2.height);
BltShader &shader = shState->shaders().blt;
shader.bind();
shader.setTexSize(gpTexSize);
shader.setSource();
shader.setDestination(gpTex2.tex);
shader.setSubRect(bltRect);
shader.setOpacity(txtAlpha);
shState->bindTex();
TEX::uploadSubImage(0, 0, txtSurf->w, txtSurf->h, txtSurf->pixels, GL_RGBA);
TEX::setSmooth(true);
Quad &quad = shState->gpQuad();
quad.setTexRect(FloatRect(0, 0, txtSurf->w, txtSurf->h));
quad.setPosRect(posRect);
p->bindFBO();
p->pushSetViewport(shader);
p->blitQuad(quad);
p->popViewport();
}
SDL_FreeSurface(txtSurf);
p->addTaintedArea(posRect);
p->onModified();
}
