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tools/lottie2gif: support background color setting.

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A white background will be set by default.

Usage:
$lottie2gif test.lottie -b ff0000 //red background color
This commit is contained in:
Hermet Park 2023-11-13 20:41:05 +09:00
parent 750e4d6261
commit 6387615a90
2 changed files with 22 additions and 3 deletions
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4
README.md
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@ -378,7 +378,7 @@ Both flags, if provided, are applied to all of the `.json` files.
The usage examples of the `lottie2gif`:
```
Usage:
lottie2gif [Lottie file] or [Lottie folder] [-r resolution] [-f fps]
lottie2gif [Lottie file] or [Lottie folder] [-r resolution] [-f fps] [-b background color]
Flags:
-r set the output image resolution.
@ -390,7 +390,7 @@ Examples:
$ lottie2gif input.json -r 600x600 -f 30
$ lottie2gif lottiefolder
$ lottie2gif lottiefolder -r 600x600
$ lottie2gif lottiefolder -r 600x600 -f 30
$ lottie2gif lottiefolder -r 600x600 -f 30 -b fa7410
```
### SVG to PNG

21
src/tools/lottie2gif/lottie2gif.cpp
View file

@ -47,10 +47,11 @@ private:
uint32_t fps = 30;
uint32_t width = 600;
uint32_t height = 600;
uint32_t bgColor = 0xffffffff; //a white by default.
void helpMsg()
{
cout << "Usage: \n lottie2gif [Lottie file] or [Lottie folder] [-r resolution] [-f fps]\n\nExamples: \n $ lottie2gif input.json\n $ lottie2gif input.json -r 600x600\n $ lottie2gif input.json -f 30\n $ lottie2gif input.json -r 600x600 -f 30\n $ lottie2gif lottiefolder\n $ lottie2gif lottiefolder -r 600x600 -f 30\n\n";
cout << "Usage: \n lottie2gif [Lottie file] or [Lottie folder] [-r resolution] [-f fps] [-b background color]\n\nExamples: \n $ lottie2gif input.json\n $ lottie2gif input.json -r 600x600\n $ lottie2gif input.json -f 30\n $ lottie2gif input.json -r 600x600 -f 30\n $ lottie2gif lottiefolder\n $ lottie2gif lottiefolder -r 600x600 -f 30 -b fa7410\n\n";
}
bool validate(string& lottieName)
@ -78,6 +79,17 @@ private:
picture->size(width * scale, height * scale);
auto saver = Saver::gen();
//set a background color
auto r = (uint8_t)((bgColor & 0xff0000) >> 16);
auto g = (uint8_t)((bgColor & 0x00ff00) >> 8);
auto b = (uint8_t)((bgColor & 0x0000ff));
auto bg = tvg::Shape::gen();
bg->fill(r, g, b, 255);
bg->appendRect(0, 0, width * scale, height * scale);
saver->background(std::move(bg));
if (saver->save(std::move(animation), out, 100, fps) != Result::Success) return false;
if (saver->sync() != Result::Success) return false;
@ -216,6 +228,13 @@ public:
return 1;
}
fps = atoi(p_arg);
} else if (p[1] == 'b') {
//background color
if (!p_arg) {
cout << "Error: Missing background color attribute. Expected eg. -b fa7410." << endl;
return 1;
}
bgColor = (uint32_t) strtol(p_arg, NULL, 16);
} else {
cout << "Warning: Unknown flag (" << p << ")." << endl;
}