int main()
{
gdImagePtr im;
int bordercolor, color;
im = gdImageCreateTrueColor(100, 100);
gdImageAlphaBlending(im, 1);
gdImageSaveAlpha(im, 1);
bordercolor = gdImageColorAllocateAlpha(im, 0, 0, 0, 2);
color = gdImageColorAllocateAlpha(im, 0, 0, 0, 1);
gdImageFillToBorder(im, 5, 5, bordercolor, color);
color = gdImageGetPixel(im, 5, 5);
gdImageDestroy(im);
if (gdTestAssert(color==0x1000000)) {
return 0;
} else {
printf("c: %X, expected %X\n", color, 0x1000000);
return -1;
}
}
gdImagePtr rs_gdImageThickLineBrush(int line_weight, RS_Color& color)
{
if (line_weight % 2 == 1)
line_weight += 1;
int sx = line_weight;
int sy = line_weight;
gdImagePtr brush = gdImageCreateTrueColor(sx, sy);
int transparent = gdImageColorAllocateAlpha(brush, 0, 0, 0, 127);
gdImageAlphaBlending(brush, 0);
gdImageFilledRectangle(brush, 0, 0, sx, sy, transparent);
//compute fractional alpha value for antialiasing effect
//each pixel should be hit by line_weight / 2 number of circles
//so the alpha is computed as 255 / line_weight * 2
RS_Color falpha = color;
falpha.alpha() = falpha.alpha() / line_weight * 2 + 1;
falpha.alpha() = (falpha.alpha() < 255)? falpha.alpha() : 255;
//outer transparent circle -- for antialiased effect
rs_gdImageCircleForBrush(brush, sx/2, sy/2, line_weight / 2, falpha);
gdImageAlphaBlending(brush, 1);
//inner non-transparent circle
rs_gdImageCircleForBrush(brush, sx/2, sy/2, (line_weight - 2) / 2, color);
return brush;
}
int main()
{
gdImagePtr im;
int transparent, color;
im = gdImageCreateTrueColor(100, 100);
transparent = gdImageColorAllocateAlpha(im, 255, 255, 255, 80);
gdImageFilledRectangle(im, 0,0, 99,99, transparent);
color = gdImageColorAllocateAlpha(im, 0, 255, 0, 100);
gdImageFilledArc(im, 49,49, 99,99, 0,360, color, gdPie);
gdAssertImageEqualsToFile("gdimagefilledarc/php_bug43828_exp.png", im);
gdImageDestroy(im);
return gdNumFailures();
}
int CFunctions::imgColorAllocateAlpha ( lua_State* luaVM )
{
// bool/int imageColorAllocateAlpha( userdata im, int red, int green, int blue, int alpha)
if ( luaVM )
{
if ( lua_type ( luaVM, 1 ) == LUA_TLIGHTUSERDATA &&
lua_type ( luaVM, 2 ) == LUA_TNUMBER &&
lua_type ( luaVM, 3 ) == LUA_TNUMBER &&
lua_type ( luaVM, 4 ) == LUA_TNUMBER &&
lua_type ( luaVM, 5 ) == LUA_TNUMBER )
{
gdImagePtr im = mImgManager->GetImage( lua_touserdata( luaVM, 1 ) );
if( im != NULL )
{
lua_pushnumber( luaVM, gdImageColorAllocateAlpha( im, (int)lua_tonumber(luaVM, 2), (int)lua_tonumber(luaVM, 3), (int)lua_tonumber(luaVM, 4), (int)lua_tonumber(luaVM, 5) ) );
}
else
{
lua_pushboolean( luaVM, false );
}
return 1;
}
else
{
pModuleManager->DebugPrintf( luaVM, "Incorrect parameters in: imageColorAllocate" );
lua_pushboolean( luaVM, false );
}
return 1;
}
return 0;
}
int main()
{
gdImagePtr im;
int error = 0;
int c, c1, c2, c3, c4, color, i;
im = gdImageCreateTrueColor(5, 5);
c = gdImageColorExact(im, 255, 0, 255);
c2 = gdImageColorExactAlpha(im, 255, 0, 255, 100);
gdImageDestroy(im);
if (gdTestAssert(c == 0xFF00FF) != 1) {
error = -1;
}
if (gdTestAssert(c2 == 0x64FF00FF) != 1) {
error = -1;
}
im = gdImageCreate(5, 5);
c1 = gdImageColorAllocate(im, 255, 0, 255);
c2 = gdImageColorAllocate(im, 255, 200, 0);
c3 = gdImageColorAllocateAlpha(im, 255, 0, 255, 100);
c1 = gdImageColorExact(im, 255, 0, 255);
c2 = gdImageColorExact(im, 255, 200, 0);
c3 = gdImageColorExactAlpha(im, 255, 0, 255, 100);
c4 = gdImageColorExactAlpha(im, 255, 34, 255, 100);
if (gdTestAssert(c1 == 0) != 1) {
error = -1;
}
if (gdTestAssert(c2 == 1) != 1) {
error = -1;
}
if (gdTestAssert(c3 == 2) != 1) {
error = -1;
}
if (gdTestAssert(c4 == -1) != 1) {
error = -1;
}
color = gdTrueColorAlpha(gdImageRed(im, c1), gdImageGreen(im, c1),
gdImageBlue(im, c1), 0);
if (gdTestAssert(color == 0xFF00FF) != 1) {
error = -1;
}
color = gdTrueColorAlpha(gdImageRed(im, c2), gdImageGreen(im, c2),
gdImageBlue(im, c2), 0);
if (gdTestAssert(color == 0xFFC800) != 1) {
error = -1;
}
color = gdTrueColorAlpha(gdImageRed(im, c3), gdImageGreen(im, c3),
gdImageBlue(im, c3), 0);
if (gdTestAssert(color == 0xFF00FF) != 1) {
error = -1;
}
gdImageDestroy(im);
return error;
}
int GdImageRenderer::createColor(const RGBA& color)
{
if (color.hasAlpha()) {
return gdImageColorAllocateAlpha(image_, color.red, color.green, color.blue, 127 - (color.alpha / 2));
}
else {
return gdImageColorAllocate(image_, color.red, color.green, color.blue);
}
}
gdImagePtr rotatePixmapGD(gdImagePtr img, double angle_rad)
{
gdImagePtr rimg = NULL;
double cos_a, sin_a;
double x1 = 0.0, y1 = 0.0; /* destination rectangle */
double x2 = 0.0, y2 = 0.0;
double x3 = 0.0, y3 = 0.0;
double x4 = 0.0, y4 = 0.0;
long minx, miny, maxx, maxy;
int width=0, height=0;
/* int color; */
sin_a = sin(angle_rad);
cos_a = cos(angle_rad);
/* compute distination rectangle (x1,y1 is known) */
x1 = 0 ;
y1 = 0 ;
x2 = img->sy * sin_a;
y2 = -img->sy * cos_a;
x3 = (img->sx * cos_a) + (img->sy * sin_a);
y3 = (img->sx * sin_a) - (img->sy * cos_a);
x4 = (img->sx * cos_a);
y4 = (img->sx * sin_a);
minx = (long) MS_MIN(x1,MS_MIN(x2,MS_MIN(x3,x4)));
miny = (long) MS_MIN(y1,MS_MIN(y2,MS_MIN(y3,y4)));
maxx = (long) MS_MAX(x1,MS_MAX(x2,MS_MAX(x3,x4)));
maxy = (long) MS_MAX(y1,MS_MAX(y2,MS_MAX(y3,y4)));
width = (int)ceil(maxx-minx);
height = (int)ceil(maxy-miny);
/* create the new image based on the computed width/height */
if (gdImageTrueColor(img)) {
rimg = gdImageCreateTrueColor(width, height);
gdImageAlphaBlending(rimg, 0);
gdImageFilledRectangle(rimg, 0, 0, width, height, gdImageColorAllocateAlpha(rimg, 0, 0, 0, gdAlphaTransparent));
} else {
int tc = gdImageGetTransparent(img);
rimg = gdImageCreate(width, height);
if(tc != -1)
gdImageColorTransparent(rimg, gdImageColorAllocate(rimg, gdImageRed(img, tc), gdImageGreen(img, tc), gdImageBlue(img, tc)));
}
if(!rimg) {
msSetError(MS_GDERR,"failed to create rotated pixmap","rotatePixmapGD()");
return NULL;
}
gdImageCopyRotated (rimg, img, width*0.5, height*0.5, 0, 0, gdImageSX(img), gdImageSY(img), angle_rad*MS_RAD_TO_DEG);
return rimg;
}
result_t Image::colorAllocateAlpha(int32_t red, int32_t green, int32_t blue,
double alpha, int32_t &retVal)
{
if (!m_image)
return CHECK_ERROR(CALL_E_INVALID_CALL);
if (red < 0 || red > 255 || green < 0 || green > 255 || blue < 0
|| blue > 255 || alpha < 0 || alpha > 1)
return CHECK_ERROR(CALL_E_INVALIDARG);
retVal = gdImageColorAllocateAlpha(m_image, red, green, blue, doubleToInt(alpha * 127));
return 0;
}
gdImagePtr blendTransparency(gdImagePtr image, int height)
{
gdImageAlphaBlending(image, 0);
int w = TARGET_WIDTH;
int h = height;
int h1 = h / 6;
int h2 = 5 * h1;
int l1 = w / 6;
int l2 = 5 * 11;
int row, col;
for (row = 0; row < h; row++) {
for (col = 0; col < w; col++) {
int aval = 40;
if ((row < h1) || (row > h2))
aval = 80;
else
if ((col < l1) || (col > l2))
aval = 80;
int c = gdImageGetPixel(image, col, row);
int r = gdImageRed(image, c);
int g = gdImageGreen(image, c);
int b = gdImageBlue(image, c);
int c1 = gdImageColorAllocateAlpha(image, r, g, b, aval);
gdImageSetPixel(image, col, row, c1);
}
}
gdImageSaveAlpha(image, 1);
return image;
}
int main()
{
gdImagePtr dst_tc, src;
int c1;
src = gdImageCreate(5,5);
gdImageAlphaBlending(src, 0);
gdImageColorAllocate(src, 255,255,255); /* allocate white for background color */
c1 = gdImageColorAllocateAlpha(src, 255,0,0,70);
gdImageFilledRectangle(src, 0,0, 4,4, c1);
dst_tc = gdImageCreateTrueColor(5,5);
gdImageAlphaBlending(dst_tc, 0);
gdImageCopy(dst_tc, src, 0,0, 0,0, gdImageSX(src), gdImageSY(src));
/* CuAssertImageEquals(tc, src, dst_tc); */
/* Destroy it */
gdImageDestroy(dst_tc);
gdImageDestroy(src);
return 0;
}
void gdDrawImage(HDC hdc, RECT *rc)
{
HDC mem_dc;
BITMAPINFO bmp_info;
void* bits;
HBITMAP bmp, temp;
gdImagePtr im;
int width, height, stride;
int white, black, blue, red;
char *s = "Hello world!";
gdFontPtr lfont, gfont;
width = rc->right - rc->left;
height = rc->bottom - rc->top;
bmp_info = gdCreateBmp(width, height);
// Create memory device context
mem_dc = CreateCompatibleDC(hdc);
if (!mem_dc) {
MessageBox(NULL, "Can't create a compatible DC!", "Error!", MB_ICONEXCLAMATION | MB_OK);
return;
}
// bits points to a shared buffer of pixels
bits = NULL;
bmp = CreateDIBSection(mem_dc, &bmp_info, DIB_RGB_COLORS, (void**)&bits, 0, 0);
// Selecting the object before doing anything allows you to use libgd
// together with native Windows GDI.
temp = (HBITMAP)SelectObject(mem_dc, bmp);
/*stride = ((width * 1 + 3) >> 2) << 2;*/
// always uses 32bit in BMPINFO
stride = width;
im = NULL;
// Attach shared buffer of pixels to GD image
// Negative stride places 0,0 in upper-left corner
im = gdImageTrueColorAttachBuffer((int*)bits, width, height, -stride);
if (!im) {
MessageBox(NULL, "GD image creation failed!", "Error!", MB_ICONEXCLAMATION | MB_OK);
return;
}
// Start of GD drawing
white = gdImageColorAllocate(im, 255, 255, 255);
black = gdImageColorAllocate(im, 0, 0, 0);
blue = gdImageColorAllocate(im, 0, 0, 255);
// Allocate the color red, 50% transparent.
red = gdImageColorAllocateAlpha(im, 255, 0, 0, 64);
// Erase background with white color
gdImageFilledRectangle(im, 0, 0, width, height, 0xFF0000);
lfont = gdFontGetLarge();
gfont = gdFontGetGiant();
// Draw a dashed line from the upper left corner to the lower right corner.
gdImageFilledRectangle(im, 25, 25, 100, 100, blue);
gdImageChar(im, gfont, 35, 35, 'Q', white);
gdImageFilledRectangle(im, 50, 50, 75, 175, red);
gdImageLine(im, 0, 0, 150, 150, black);
gdImageString(im, gdFontGetLarge(),
im->sx / 2 - (strlen(s) * lfont->w / 2),
im->sy / 2 - lfont->h / 2,
(unsigned char*)s, black);
// Copy drawing from memory context (shared bitmap buffer) to screen DC.
BitBlt(hdc, rc->left, rc->top, width, height, mem_dc, 0, 0, SRCCOPY);
// Free
gdImageDetachBuffer(im);
SelectObject(mem_dc, temp);
DeleteObject(bmp);
DeleteObject(mem_dc);
}
int ConvertColor(gdImagePtr i, RS_Color& c)
{
return gdImageColorAllocateAlpha(i, c.red(), c.green(), c.blue(), 127 - c.alpha()/2 );
}
ngx_int_t ngx_http_small_light_gd_process(ngx_http_request_t *r, ngx_http_small_light_ctx_t *ctx)
{
ngx_http_small_light_gd_ctx_t *ictx;
ngx_http_small_light_image_size_t sz;
gdImagePtr src, dst, canvas;
ngx_int_t colors, transparent, palette, red, green, blue;
ngx_int_t ax, ay, ox, oy, type;
int iw, ih, radius, ccolor, bcolor;
char *sharpen, *of;
u_char *out;
int size;
double q;
ictx = (ngx_http_small_light_gd_ctx_t *)ctx->ictx;
src = ngx_http_small_light_gd_src(ictx);
if (src == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to get image source %s:%d",
__FUNCTION__,
__LINE__);
return NGX_ERROR;
}
/* adjust image size */
iw = gdImageSX(src);
ih = gdImageSY(src);
ngx_http_small_light_calc_image_size(r, ctx, &sz, iw, ih);
colors = gdImageColorsTotal(src);
palette = 0;
transparent = -1;
red = 0;
green = 0;
blue = 0;
if (colors) {
transparent = gdImageGetTransparent(src);
if (transparent != -1) {
palette = colors;
red = gdImageRed(src, transparent);
green = gdImageGreen(src, transparent);
blue = gdImageBlue(src, transparent);
}
}
gdImageColorTransparent(src, -1);
/* rotate. */
if (sz.angle) {
dst = src;
ax = (iw % 2 == 0) ? 1 : 0;
ay = (ih % 2 == 0) ? 1 : 0;
switch (sz.angle) {
case 90:
case 270:
dst = ngx_http_small_light_gd_new(ih, iw, palette);
if (dst == NULL) {
gdImageDestroy(src);
return NGX_ERROR;
}
if (sz.angle == 90) {
ox = ih / 2 - ay;
oy = iw / 2 + ax;
} else {
ox = ih / 2 + ay;
oy = iw / 2 - ax;
}
gdImageCopyRotated(dst, src, ox, oy, 0, 0,
iw, ih, -sz.angle);
gdImageDestroy(src);
break;
case 180:
dst = ngx_http_small_light_gd_new(iw, ih, palette);
if (dst == NULL) {
gdImageDestroy(src);
return NGX_ERROR;
}
gdImageCopyRotated(dst, src, iw / 2 - ax, ih / 2 - ay, 0, 0,
iw + ax, ih + ay, sz.angle);
gdImageDestroy(src);
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"image not rotated. 'angle'(%ui) must be 90 or 180 or 270. %s:%d",
sz.angle,
__FUNCTION__,
__LINE__);
break;
}
src = dst;
}
/* calc size. */
iw = gdImageSX(src);
ih = gdImageSY(src);
ngx_http_small_light_calc_image_size(r, ctx, &sz, iw, ih);
/* pass through. */
if (sz.pt_flg != 0) {
gdImageDestroy(src);
ctx->of = ctx->inf;
return NGX_OK;
}
/* crop, scale. */
if (sz.scale_flg != 0) {
dst = ngx_http_small_light_gd_new(sz.dw, sz.dh, palette);
if (dst == NULL) {
gdImageDestroy(src);
return NGX_ERROR;
}
if (colors == 0) {
gdImageSaveAlpha(dst, 1);
gdImageAlphaBlending(dst, 0);
}
gdImageCopyResampled(dst, src, 0, 0, sz.sx, sz.sy, sz.dw, sz.dh, sz.sw, sz.sh);
if (colors) {
gdImageTrueColorToPalette(dst, 1, 256);
}
gdImageDestroy(src);
} else {
dst = src;
}
if (transparent != -1 && colors) {
gdImageColorTransparent(dst, gdImageColorExact(dst, red, green, blue));
}
/* effects. */
sharpen = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "sharpen");
if (sharpen != NULL) {
radius = ngx_http_small_light_parse_int(sharpen);
if (radius > 0) {
gdImageSharpen(dst, radius);
}
}
/* interlace */
gdImageInterlace(dst, 1);
/* create canvas then draw image to the canvas. */
if (sz.cw > 0.0 && sz.ch > 0.0) {
canvas = gdImageCreateTrueColor(sz.cw, sz.ch);
if (canvas == NULL) {
gdImageDestroy(dst);
return NGX_ERROR;
}
ccolor = gdImageColorAllocateAlpha(canvas, sz.cc.r, sz.cc.g, sz.cc.b, sz.cc.a);
gdImageFilledRectangle(canvas, 0, 0, sz.cw, sz.ch, ccolor);
gdImageCopy(canvas, dst, sz.dx, sz.dy, 0, 0, sz.dw, sz.dh);
gdImageDestroy(dst);
dst = canvas;
}
/* border. */
if (sz.bw > 0.0 || sz.bh > 0.0) {
bcolor = gdImageColorAllocateAlpha(dst, sz.bc.r, sz.bc.g, sz.bc.b, sz.bc.a);
if (sz.cw > 0.0 && sz.ch > 0.0) {
gdImageFilledRectangle(dst, 0, 0, sz.cw, sz.bh, bcolor);
gdImageFilledRectangle(dst, 0, 0, sz.bw, sz.ch, bcolor);
gdImageFilledRectangle(dst, 0, sz.ch - sz.bh, sz.cw - 1, sz.ch - 1, bcolor);
gdImageFilledRectangle(dst, sz.cw - sz.bw, 0, sz.cw - 1, sz.ch - 1, bcolor);
} else {
gdImageFilledRectangle(dst, 0, 0, sz.dw, sz.bh, bcolor);
gdImageFilledRectangle(dst, 0, 0, sz.bw, sz.dh, bcolor);
gdImageFilledRectangle(dst, 0, sz.dh - sz.bh, sz.dw - 1, sz.dh - 1, bcolor);
gdImageFilledRectangle(dst, sz.dw - sz.bw, 0, sz.dw - 1, sz.dh - 1, bcolor);
}
}
of = NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "of");
if (ngx_strlen(of) > 0) {
type = ngx_http_small_light_type(of);
if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_NONE) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"of is invalid(%s) %s:%d",
of,
__FUNCTION__,
__LINE__);
} else if (type == NGX_HTTP_SMALL_LIGHT_IMAGE_WEBP) {
#ifdef NGX_HTTP_SMALL_LIGHT_GD_WEBP_ENABLED
ictx->type = type;
#else
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"WebP is not supported %s:%d",
__FUNCTION__,
__LINE__);
#endif
} else {
ictx->type = type;
}
}
ctx->of = ngx_http_small_light_image_types[ictx->type - 1];
q = ngx_http_small_light_parse_double(NGX_HTTP_SMALL_LIGHT_PARAM_GET_LIT(&ctx->hash, "q"));
if (q == 0) {
q = 100;
}
out = ngx_http_small_light_gd_out(dst, ictx->type, (int *)&size, q);
gdImageDestroy(dst);
if (out == NULL) {
return NGX_ERROR;
}
/* get small_lighted image as binary. */
ctx->content = out;
ctx->content_length = size;
ngx_pfree(r->pool, ctx->content_orig);
ictx->complete = 1;
return NGX_OK;
}
static int createImage (MULTICHART_ID id)
{
int i;
if (id->height < (10 * gdFontMediumBold->h))
{
return -1;
}
if (id->im)
{
gdImageDestroy (id->im);
}
id->im = gdImageCreate (id->width, id->height);
if (id->im == NULL)
{
return -1;
}
// ... allocate our colors
id->bgcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->bgcolor),
GLC_GREEN(id->bgcolor),
GLC_BLUE(id->bgcolor),
GLC_ALPHA(id->bgcolor));
if (id->isTransparent)
{
gdImageColorTransparent (id->im, id->bgcolor);
id->chartcolor = id->bgcolor;
id->titleBGcolor = id->bgcolor;
}
else
{
id->chartcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->chartcolor),
GLC_GREEN(id->chartcolor),
GLC_BLUE(id->chartcolor),
GLC_ALPHA(id->chartcolor));
id->titleBGcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->titleBGcolor),
GLC_GREEN(id->titleBGcolor),
GLC_BLUE(id->titleBGcolor),
GLC_ALPHA(id->titleBGcolor));
}
id->gridcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->gridcolor),
GLC_GREEN(id->gridcolor),
GLC_BLUE(id->gridcolor),
GLC_ALPHA(id->gridcolor));
id->titleFGcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->titleFGcolor),
GLC_GREEN(id->titleFGcolor),
GLC_BLUE(id->titleFGcolor),
GLC_ALPHA(id->titleFGcolor));
id->textcolor = gdImageColorAllocateAlpha (id->im,
GLC_RED(id->textcolor),
GLC_GREEN(id->textcolor),
GLC_BLUE(id->textcolor),
GLC_ALPHA(id->textcolor));
for (i = 0; i < id->numdatasets; i ++)
{
id->dataset[i].lineColor =
gdImageColorAllocateAlpha (id->im,
GLC_RED(id->dataset[i].lineColor),
GLC_GREEN(id->dataset[i].lineColor),
GLC_BLUE(id->dataset[i].lineColor),
GLC_ALPHA(id->dataset[i].lineColor));
}
return 0;
}