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zoom cursor with dpi

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Signed-off-by: fufesou <shuanglongchen@yeah.net>
This commit is contained in:
fufesou
2023-02-02 14:39:58 +08:00
parent d511d1e27a
commit f9e3a3f074
2 changed files with 25 additions and 22 deletions
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15
flutter/lib/models/model.dart
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@@ -540,6 +540,7 @@ class CanvasModel with ChangeNotifier {
double _y = 0;
// image scale
double _scale = 1.0;
double _devicePixelRatio = 1.0;
Size _size = Size.zero;
// the tabbar over the image
// double tabBarHeight = 0.0;
@@ -563,6 +564,7 @@ class CanvasModel with ChangeNotifier {
double get x => _x;
double get y => _y;
double get scale => _scale;
double get devicePixelRatio => _devicePixelRatio;
Size get size => _size;
ScrollStyle get scrollStyle => _scrollStyle;
ViewStyle get viewStyle => _lastViewStyle;
@@ -611,8 +613,9 @@ class CanvasModel with ChangeNotifier {
_lastViewStyle = viewStyle;
_scale = viewStyle.scale;
_devicePixelRatio = ui.window.devicePixelRatio;
if (kIgnoreDpi && style == kRemoteViewStyleOriginal) {
_scale = 1.0 / ui.window.devicePixelRatio;
_scale = 1.0 / _devicePixelRatio;
}
_x = (size.width - displayWidth * _scale) / 2;
_y = (size.height - displayHeight * _scale) / 2;
@@ -772,11 +775,9 @@ class CursorData {
int _doubleToInt(double v) => (v * 10e6).round().toInt();
double _checkUpdateScale(double scale, bool shouldScale) {
double _checkUpdateScale(double scale) {
double oldScale = this.scale;
if (!shouldScale) {
scale = 1.0;
} else {
if (scale != 1.0) {
// Update data if scale changed.
final tgtWidth = (width * scale).toInt();
final tgtHeight = (width * scale).toInt();
@@ -817,8 +818,8 @@ class CursorData {
return scale;
}
String updateGetKey(double scale, bool shouldScale) {
scale = _checkUpdateScale(scale, shouldScale);
String updateGetKey(double scale) {
scale = _checkUpdateScale(scale);
return '${peerId}_${id}_${_doubleToInt(width * scale)}_${_doubleToInt(height * scale)}';
}
}