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Make PixmapScanner types bidirectional ranges

This commit is contained in:
Elias Batek 2024-10-07 03:43:44 +02:00
parent db6b6d1f74
commit a2f437d4ad
1 changed files with 60 additions and 0 deletions
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60
pixmappaint.d
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@ -919,6 +919,11 @@ struct PixmapScanner {
_width = pixmap.width; _width = pixmap.width;
} }
///
typeof(this) save() {
return this;
}
/// ///
bool empty() const { bool empty() const {
return (_data.length == 0); return (_data.length == 0);
@ -933,6 +938,16 @@ struct PixmapScanner {
void popFront() { void popFront() {
_data = _data[_width .. $]; _data = _data[_width .. $];
} }
///
const(Pixel)[] back() const {
return _data[($ - _width) .. $];
}
///
void popBack() {
_data = _data[0 .. ($ - _width)];
}
} }
/++ /++
@ -957,6 +972,11 @@ struct PixmapScannerRW {
_width = pixmap.width; _width = pixmap.width;
} }
///
typeof(this) save() {
return this;
}
/// ///
bool empty() const { bool empty() const {
return (_data.length == 0); return (_data.length == 0);
@ -971,6 +991,16 @@ struct PixmapScannerRW {
void popFront() { void popFront() {
_data = _data[_width .. $]; _data = _data[_width .. $];
} }
///
Pixel[] back() {
return _data[($ - _width) .. $];
}
///
void popBack() {
_data = _data[0 .. ($ - _width)];
}
} }
/++ /++
@ -994,6 +1024,11 @@ struct SubPixmapScanner {
_feed = subPixmap.source.width; _feed = subPixmap.source.width;
} }
///
typeof(this) save() {
return this;
}
/// ///
bool empty() const { bool empty() const {
return (_data.length == 0); return (_data.length == 0);
@ -1013,6 +1048,16 @@ struct SubPixmapScanner {
_data = _data[_feed .. $]; _data = _data[_feed .. $];
} }
///
const(Pixel)[] back() const {
return _data[($ - _width) .. $];
}
///
void popBack() {
_data = _data[0 .. ($ - _width)];
}
} }
/++ /++
@ -1039,6 +1084,11 @@ struct SubPixmapScannerRW {
_feed = subPixmap.source.width; _feed = subPixmap.source.width;
} }
///
typeof(this) save() {
return this;
}
/// ///
bool empty() const { bool empty() const {
return (_data.length == 0); return (_data.length == 0);
@ -1058,6 +1108,16 @@ struct SubPixmapScannerRW {
_data = _data[_feed .. $]; _data = _data[_feed .. $];
} }
///
Pixel[] back() {
return _data[($ - _width) .. $];
}
///
void popBack() {
_data = _data[0 .. ($ - _width)];
}
} }
/// ///