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flutter_desktop: custom image quality

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Signed-off-by: fufesou <shuanglongchen@yeah.net>
This commit is contained in:
fufesou
2022-08-31 18:41:55 +08:00
parent 59f0ffa82f
commit 4b9805b0f3
8 changed files with 240 additions and 121 deletions
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15
flutter/lib/desktop/pages/remote_page.dart
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@@ -689,11 +689,11 @@ class ImagePaint extends StatelessWidget {
width: c.getDisplayWidth() * s,
height: c.getDisplayHeight() * s,
child: CustomPaint(
painter: new ImagePainter(image: m.image, x: 0, y: 0, scale: s),
painter: ImagePainter(image: m.image, x: 0, y: 0, scale: s),
));
return Center(
child: NotificationListener<ScrollNotification>(
onNotification: (_notification) {
onNotification: (notification) {
final percentX = _horizontal.position.extentBefore /
(_horizontal.position.extentBefore +
_horizontal.position.extentInside +
@@ -716,8 +716,8 @@ class ImagePaint extends StatelessWidget {
width: c.size.width,
height: c.size.height,
child: CustomPaint(
painter: new ImagePainter(
image: m.image, x: c.x / s, y: c.y / s, scale: s),
painter:
ImagePainter(image: m.image, x: c.x / s, y: c.y / s, scale: s),
));
return _buildListener(imageWidget);
}
@@ -771,7 +771,7 @@ class CursorPaint extends StatelessWidget {
// final adjust = m.adjustForKeyboard();
var s = c.scale;
return CustomPaint(
painter: new ImagePainter(
painter: ImagePainter(
image: m.image,
x: m.x * s - m.hotx + c.x,
y: m.y * s - m.hoty + c.y,
@@ -796,15 +796,16 @@ class ImagePainter extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
if (image == null) return;
if (x.isNaN || y.isNaN) return;
canvas.scale(scale, scale);
// https://github.com/flutter/flutter/issues/76187#issuecomment-784628161
// https://api.flutter-io.cn/flutter/dart-ui/FilterQuality.html
var paint = new Paint();
var paint = Paint();
paint.filterQuality = FilterQuality.medium;
if (scale > 10.00000) {
paint.filterQuality = FilterQuality.high;
}
canvas.drawImage(image!, new Offset(x, y), paint);
canvas.drawImage(image!, Offset(x, y), paint);
}
@override