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size is optional when rendering sprites, if not present use original size; default values to null, instead of -1

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This commit is contained in:
Luan Nico
2018-04-29 11:48:45 -03:00
parent 5ed0ea986e
commit f81a9ab41a
1 changed files with 30 additions and 10 deletions
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40
lib/sprite.dart
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@ -11,12 +11,12 @@ class Sprite {
static final Paint paint = new Paint()..color = Colors.white;
Sprite(String fileName, {double x = 0.0, double y = 0.0, double width = -1.0, double height = -1.0}) {
Sprite(String fileName, {double x = 0.0, double y = 0.0, double width = null, double height = null}) {
Flame.images.load(fileName).then((img) {
if (width == -1.0) {
if (width == null) {
width = img.width.toDouble();
}
if (height == -1.0) {
if (height == null) {
height = img.height.toDouble();
}
this.image = img;
@ -24,11 +24,11 @@ class Sprite {
});
}
Sprite.fromImage(this.image, {double x = 0.0, double y = 0.0, double width = -1.0, double height = -1.0}) {
if (width == -1.0) {
Sprite.fromImage(this.image, {double x = 0.0, double y = 0.0, double width = null, double height = null}) {
if (width == null) {
width = image.width.toDouble();
}
if (height == -1.0) {
if (height == null) {
height = image.height.toDouble();
}
this.src = new Rect.fromLTWH(x, y, width, height);
@ -43,17 +43,37 @@ class Sprite {
return image != null && src != null;
}
void renderPosition(Canvas canvas, Position p, Position size) {
double get _imageWidth => this.image.width.toDouble();
double get _imageHeight => this.image.height.toDouble();
Position get originalSize {
if (!loaded()) {
return null;
}
return new Position(_imageWidth, _imageHeight);
}
void renderPosition(Canvas canvas, Position p, [Position size]) {
if (!this.loaded()) {
return;
}
size ??= originalSize;
renderRect(canvas, Position.rectFrom(p, size));
}
void render(Canvas canvas, double width, double height) {
void render(Canvas canvas, [double width, double height]) {
if (!this.loaded()) {
return;
}
width ??= _imageWidth;
height ??= _imageHeight;
renderRect(canvas, new Rect.fromLTWH(0.0, 0.0, width, height));
}
void renderRect(Canvas canvas, Rect dst) {
if (this.loaded()) {
canvas.drawImageRect(image, src, dst, paint);
if (!this.loaded()) {
return;
}
canvas.drawImageRect(image, src, dst, paint);
}
}