bool readImage(SImage& image, MemChunk& data, int index)
{
// Get image info
SImage::info_t info;
FIBITMAP* bm = getFIInfo(data, info);
// Check it created/read ok
if (!bm)
{
Global::error = "Unable to read image data (unsupported format?)";
return false;
}
// Get image palette if it exists
RGBQUAD* bm_pal = FreeImage_GetPalette(bm);
Palette palette;
if (bm_pal)
{
int a = 0;
int b = FreeImage_GetColorsUsed(bm);
if (b > 256)
b = 256;
for (; a < b; a++)
palette.setColour(a, rgba_t(bm_pal[a].rgbRed, bm_pal[a].rgbGreen, bm_pal[a].rgbBlue, 255));
}
// Create image
if (info.has_palette)
image.create(info, &palette);
else
image.create(info);
uint8_t* img_data = imageData(image);
// Convert to 32bpp & flip vertically
FIBITMAP* rgba = FreeImage_ConvertTo32Bits(bm);
if (!rgba)
{
LOG_MESSAGE(1, "FreeImage_ConvertTo32Bits failed for image data");
Global::error = "Error reading PNG data";
return false;
}
FreeImage_FlipVertical(rgba);
// Load raw RGBA data
uint8_t* bits_rgba = FreeImage_GetBits(rgba);
int c = 0;
for (int a = 0; a < info.width * info.height; a++)
{
img_data[c++] = bits_rgba[a * 4 + 2]; // Red
img_data[c++] = bits_rgba[a * 4 + 1]; // Green
img_data[c++] = bits_rgba[a * 4]; // Blue
img_data[c++] = bits_rgba[a * 4 + 3]; // Alpha
}
// Free memory
FreeImage_Unload(rgba);
FreeImage_Unload(bm);
return true;
}
// -----------------------------------------------------------------------------
// Creates a mask texture of the brush to preview its effect
// -----------------------------------------------------------------------------
void GfxCanvas::generateBrushShadow()
{
if (brush_ == nullptr)
return;
// Generate image
SImage img;
img.create(image_.width(), image_.height(), SImage::Type::RGBA);
for (int i = -4; i < 5; ++i)
for (int j = -4; j < 5; ++j)
if (brush_->pixel(i, j))
{
auto col = paint_colour_;
if (editing_mode_ == EditMode::Translate && translation_)
col = translation_->translate(
image_.pixelAt(cursor_pos_.x + i, cursor_pos_.y + j, &palette_), &palette_);
// Not sure what's the best way to preview cutting out
// Mimicking the checkerboard pattern perhaps?
// Cyan will do for now
else if (editing_mode_ == EditMode::Erase)
col = ColRGBA::CYAN;
img.setPixel(cursor_pos_.x + i, cursor_pos_.y + j, col);
}
// Load it as a GL texture
OpenGL::Texture::clear(tex_brush_);
tex_brush_ = OpenGL::Texture::createFromImage(img);
}
/* GfxCanvas::generateBrushShadow
* Creates a mask texture of the brush to preview its effect
*******************************************************************/
void GfxCanvas::generateBrushShadow()
{
if (brush == nullptr) return;
// Generate image
SImage img;
img.create(image->getWidth(), image->getHeight(), SIType::RGBA);
for (int i = -4; i < 5; ++i)
for (int j = -4; j < 5; ++j)
if (brush->getPixel(i, j))
{
rgba_t col = paint_colour;
if (editing_mode == 3 && translation)
col = translation->translate(image->getPixel(cursor_pos.x + i,
cursor_pos.y + j, getPalette()), getPalette());
// Not sure what's the best way to preview cutting out
// Mimicking the checkerboard pattern perhaps?
// Cyan will do for now
else if (editing_mode == 2)
col = COL_CYAN;
img.setPixel(cursor_pos.x + i, cursor_pos.y + j, col);
}
// Load it as a GL texture
tex_brush->loadImage(&img);
}
bool readImage(SImage& image, MemChunk& data, int index)
{
// Get info
SImage::info_t info = getInfo(data, index);
// Create image from data
image.create(info.width, info.height, PALMASK);
data.read(imageData(image), info.width * info.height, 0);
image.fillAlpha(255);
return true;
}
