import QtQuick 2.0
import QtQuick.Controls 1.4
import "."
Rectangle
{
id: root
width: 80
height: 400
color: "#00000000"
property int gap: 5
Wheel
{
id: wheel
x: 0; y: root.gap
xTooltip : qsTr("拖动可旋转,点N可重置正北方位")
}
Handle
{
id: handle0
x: (root.width-handle0.width)/2
y: (root.width-handle0.width)/2 + root.gap
mouseHoverPic: "pic/handle_0.png"
xTooltip : qsTr("点击可环视")
}
Handle
{
id: handle1
x: (root.width-handle1.width)/2
y: wheel.height+2*root.gap
mouseHoverPic: "pic/handle_1.png"
xTooltip : qsTr("点击可四处移动")
}
VSlider
{
id: vslider
x: (root.width-vslider.width)/2
y: wheel.height+handle1.height+3*root.gap
xTooltip : qsTr("拖动该滑块或点击相应按钮可执行缩放操作")
}
function circleContains(x0,y0,r,x,y) //圆包含; x0,y0为中心点,r为半径;返回boolean;
{
return (x-x0)*(x-x0)+(y-y0)*(y-y0) <= r*r;
}
function mouseTest(x,y)
{
var mouseTarget = {};
var x_center = root.width/2; //垂直中心线;
if(circleContains(x_center,handle0.y+handle0.height/2, handle0.height/2,x,y))
{ //眼;
mouseTarget["id"] = handle0;
mouseTarget["x0"] = x_center;
mouseTarget["y0"] = handle0.y+handle0.height/2;
// console.log("handle0",mouseTarget["x0"],mouseTarget["y0"],x,y);
return mouseTarget;
}
if(circleContains(x_center,wheel.y+wheel.height/2,wheel.height/2,x,y))
{ //圆环，这里无须判断大于内环，因为如果在内环的话，上面的判断被执行并返回;
mouseTarget["id"] = wheel;
mouseTarget["x0"] = x_center;
mouseTarget["y0"] = wheel.y+wheel.height/2;
// console.log("wheel",mouseTarget["x0"],mouseTarget["y0"],x,y);
return mouseTarget;
}
if(circleContains(x_center,handle1.y+handle1.height/2, handle1.height/2,x,y))
{ //手;
mouseTarget["id"] = handle1;
mouseTarget["x0"] = x_center;
mouseTarget["y0"] = handle1.y+handle1.height/2;
// console.log("handle1",mouseTarget["x0"],mouseTarget["y0"],x,y);
return mouseTarget;
}
if(circleContains(x_center,vslider.y+vslider.height/2,vslider.height/2,x,y))
{ //滑块;
mouseTarget["id"] = vslider;
mouseTarget["x0"] = x_center;
mouseTarget["y0"] = vslider.y+vslider.height/2;
return mouseTarget;
}
return mouseTarget;
}
function vectersArc(a,b) //求两向量间的夹角;
{
var normalized_a = a.normalized();
var normalized_b = b.normalized();
var cosArc = normalized_a.dotProduct(normalized_b)/1*1; //夹角余弦值;
cosArc = Math.acos(cosArc);//弧度;
cosArc *= 180/Math.PI;//角度;
return cosArc;
}
function rotateArc(x0,y0,x1,y1,x2,y2) //旋转; x0,y0为中心点;x1,y1为原始点,x2,y2为当前点;返回旋转角度，顺时针为正，逆时针为负;
{
var oA = Qt.vector2d(x1-x0,y1-y0);
var oB = Qt.vector2d(x2-x0,y2-y0);
var cosArc = vectersArc(oA,oB);
var oY = Qt.vector2d(0,1);
var clockWise = vectersArc(oY,oB)<vectersArc(oY,oA);
if(x1-x0>0 && x2-x0>0) //均在右侧;
{
cosArc *= clockWise ? 1 : (-1);
}
else if(x1-x0<0 && x2-x0<0) //均在左侧;
{
cosArc *= clockWise ? (-1) : 1;
}
else if(x1-x0>0 && x2-x0<0) //顺时针;
{
cosArc *= 1;
}
else if(x1-x0<0 && x2-x0>0) //逆时针;
{
cosArc *= -1;
}
return cosArc;
}
function northBtnMouseTest(x0,y0,x,y,r0,arc0)
{
// console.log("x0,y0,x,y = ",x0,y0,x,y);
var delta_len = 5;
var delta_arc = 8;
var len = Math.sqrt((x-x0)*(x-x0)+(y-y0)*(y-y0));
var oY_vect = Qt.vector2d(0,1);
var oXY_vect = Qt.vector2d(x-x0,y0-y).normalized();
var arc = vectersArc(oY_vect,oXY_vect);
// console.log("r0,len:",r0,len);
// console.log("arc0,arc:",arc0,arc);
if(len>=r0-delta_len && len<=r0+delta_len)
{
if(arc0>=0) //顺时针时;
{
if(x-x0>=0)
arc *= 1;
else
arc = 360-arc;
}
else //逆时针时;
{
if(x-x0>=0)
arc = arc-360;
else
arc *= -1;
}
return (arc>=arc0-delta_arc && arc<=arc0+delta_arc);
}
return false;
}
MouseArea
{
id: mouseAreaId
anchors.fill: parent
hoverEnabled: true
property bool bWheelHolding: false
property point perWheelPos;
property var perId : null;
property bool bNorthBtnClicked: false;
onEntered:
{
wheel.setMouseHover(true);
handle0.setMouseHover(true);
handle1.setMouseHover(true);
vslider.setMouseHover(true);
}
onExited:
{
wheel.setMouseHover(false);
handle0.setMouseHover(false);
handle1.setMouseHover(false);
vslider.setMouseHover(false);
}
onPositionChanged:
{
var target = mouseTest(mouse.x, mouse.y);
var id = target["id"];
var x0 = target["x0"];
var y0 = target["y0"];
var x = mouse.x;
var y = mouse.y;
if(id != perId)
{
if(perId!=null)
perId.onExit();
if(id!=null)
id.onEnter();
perId = id;
}
//
if(bWheelHolding==true && (id==wheel || id==handle0))
{
var arc = root.rotateArc(x0,y0,perWheelPos.x,perWheelPos.y,x,y);
arc += wheel.xArc;
if(arc>=360) arc -= 360;
if(arc<=-360) arc += 360;
wheel.xArc = arc;
perWheelPos.x = x;
perWheelPos.y = y;
}
if(id == vslider)
{
vslider.onDrag(y0,y);
}
}
onPressed:
{
var target = mouseTest(mouse.x, mouse.y);
var id = target["id"];
var x0 = target["x0"];
var y0 = target["y0"];
var x = mouse.x;
var y = mouse.y;
switch(id)
{
case wheel:
wheel.onPress();
bNorthBtnClicked = northBtnMouseTest(x0,y0,x,y,wheel.height/2,wheel.xArc);
wheel.onPressNorthBtn(bNorthBtnClicked);
break;
case handle0:
handle0.onPress(x0,y0,x,y);
break;
case handle1:
handle1.onPress(x0,y0,x,y);
break;
case vslider:
vslider.onPress(x0,y0,x,y);
break;
}
}
onReleased:
{
wheel.onRelease();
handle0.onRelease();
handle1.onRelease();
vslider.onRelease();
if(bNorthBtnClicked && !bWheelHolding)
{
wheel.xArc = 0;
}
bWheelHolding = false;
bNorthBtnClicked = false;
}
onPressAndHold:
{
var target = mouseTest(mouse.x, mouse.y);
var id = target["id"];
var x0 = target["x0"];
var y0 = target["y0"];
var x = mouse.x;
var y = mouse.y;
if(id == wheel)
{
bWheelHolding = true;
perWheelPos.x = x;
perWheelPos.y = y;
wheel.onPress();
}
}
}
}
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