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pan/scale draft

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This commit is contained in:
open-trade
2020-11-23 23:18:42 +08:00
parent 479b8303d7
commit d116251742
3 changed files with 131 additions and 17 deletions
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60
flutter_hbb/lib/model.dart
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@@ -6,6 +6,7 @@ import 'dart:convert';
import 'dart:typed_data';
import 'dart:ui' as ui;
import 'package:flutter/material.dart';
import 'package:tuple/tuple.dart';
import 'dart:async';
import 'common.dart';
@@ -47,6 +48,8 @@ class FfiModel with ChangeNotifier {
print('$_permissions');
}
bool keyboard() => _permissions['keyboard'] == true;
void clear() {
_pi = PeerInfo();
_display = Display();
@@ -151,9 +154,50 @@ class ImageModel with ChangeNotifier {
}
}
class CanvasModel with ChangeNotifier {
double _x;
double _y;
double _scale;
double _xPan;
double _yPan;
CanvasModel() {
clear();
}
double get x => _x;
double get y => _y;
double get scale => _scale;
void startPan() {
_xPan = 0;
_yPan = 0;
}
void updateOffset(double dx, double dy) {
_x += dx;
_y += dy;
notifyListeners();
}
void updateScale(double v) {
_scale *= v;
if (_scale > 1) _scale = 1;
notifyListeners();
}
void clear() {
_x = 0;
_y = 0;
_scale = 1.0;
_xPan = 0;
_yPan = 0;
}
}
class CursorModel with ChangeNotifier {
ui.Image _image;
final _images = Map<int, ui.Image>();
final _images = Map<int, Tuple3<ui.Image, double, double>>();
double _x = -10000;
double _y = -10000;
double _hotx = 0;
@@ -162,8 +206,10 @@ class CursorModel with ChangeNotifier {
double _displayOriginY = 0;
ui.Image get image => _image;
double get x => _x - _displayOriginX - _hotx;
double get y => _y - _displayOriginY - _hoty;
double get x => _x - _displayOriginX;
double get y => _y - _displayOriginY;
double get hotx => _hotx;
double get hoty => _hoty;
void updateCursorData(Map<String, dynamic> evt) {
var id = int.parse(evt['id']);
@@ -176,7 +222,7 @@ class CursorModel with ChangeNotifier {
ui.decodeImageFromPixels(rgba, width, height, ui.PixelFormat.rgba8888,
(image) {
_image = image;
_images[id] = image;
_images[id] = Tuple3(image, _hotx, _hoty);
try {
// my throw exception, because the listener maybe already dispose
notifyListeners();
@@ -187,7 +233,9 @@ class CursorModel with ChangeNotifier {
void updateCursorId(Map<String, dynamic> evt) {
final tmp = _images[int.parse(evt['id'])];
if (tmp != null) {
_image = tmp;
_image = tmp.item1;
_hotx = tmp.item2;
_hoty = tmp.item3;
notifyListeners();
}
}
@@ -222,6 +270,7 @@ class FFI {
static final imageModel = ImageModel();
static final ffiModel = FfiModel();
static final cursorModel = CursorModel();
static final canvasModel = CanvasModel();
static String getId() {
return getByName('remote_id');
@@ -283,6 +332,7 @@ class FFI {
FFI.imageModel.update(null);
FFI.cursorModel.clear();
FFI.ffiModel.clear();
FFI.canvasModel.clear();
}
static void setByName(String name, [String value = '']) {