Sailfish gui: save CPU with screen more simple

This commit is contained in:
Louis-Joseph Fournier 2016-01-02 00:11:25 +01:00
parent d45f9b5dc7
commit 2a19d30ab6
3 changed files with 29 additions and 99 deletions

View file

@ -60,27 +60,9 @@ Item {
function arc(ctx, k) {
ctx.beginPath()
ctx.moveTo(getx(amin, k), gety(amin, k))
for (var i = amin + 0.01; i <= amax; i+=0.01) {
ctx.lineTo(getx(i,k), gety(i,k))
}
ctx.arc(width/2, height + 1, k * width / 2, 0, Math.PI, 1)
ctx.stroke()
}
function arc_part(ctx, k, a1, a2) {
ctx.lineTo(getx(a1,k), gety(a1,k))
var eps = 0.01
if (a2 > a1) {
for (var i = a1 + eps; i < a2; i+=eps) {
ctx.lineTo(getx(i,k), gety(i,k))
}
}
else {
for (var i = a1 - eps; i > a2; i-=eps) {
ctx.lineTo(getx(i,k), gety(i,k))
}
}
ctx.lineTo(getx(a2,k), gety(a2,k))
return
}
function line_mark(ctx, value, r_min, r_max) {
@ -91,22 +73,6 @@ Item {
ctx.stroke()
}
function find_region() {
var l1 = min
var l2
if (!marks) return [0,0,0]
for (var i = 0; i < marks.length; i++) {
if (i == marks.length - 1) l2 = max
else l2 = (marks[i] + marks[i+1]) / 2
if (level <= l2) return [i, l1, l2]
l1 = l2
}
return [0,0,0]
}
/// Ellipse
Canvas {
id: ellipse
@ -192,11 +158,28 @@ Item {
property double k_head: 0.1 // arrow width factor of base
property double lref: width / 2
property bool is_line: false // simple line (true) or designed (false)
property bool has_gradient: false // beautiful gradient
onPaint: {
var ctx = getContext('2d');
ctx.clearRect(0,0,width,height)
ctx.lineWidth = 1
ctx.strokeStyle = theme.primaryColor
// line only
if (is_line) {
var x = getx(angle, r_arrow_base)
var y = gety(angle, r_arrow_base)
var hx = getx(angle, k)
var hy = gety(angle, k)
ctx.beginPath()
ctx.moveTo(x,y)
ctx.lineTo(hx,hy)
ctx.stroke()
return
}
// arrow base center
var x = getx(0, r_arrow_base + r_base)
@ -228,74 +211,28 @@ Item {
ctx.lineTo(bout[0], bout[1])
ctx.closePath()
ctx.stroke()
// gradient
var middle1 = orth(x, y, x + (hx - x) * 0.7, y + (hy - y) * 0.7, d_base + (d_head - d_base) * 0.7)
var grd = ctx.createLinearGradient(middle1[0], middle1[1], middle1[2], middle1[3])
grd.addColorStop(1, 'rgba(128,128,128,0.2)')
grd.addColorStop(0, "transparent")
ctx.fillStyle = grd
ctx.fill()
}
}
Canvas {
/// region colors
id: regions
property variant reg_drawed
anchors.fill: parent
property variant reg: find_region()
property double r_avg: (r_circle_min + r_circle_max) / 2
z: -4
onPaint: {
var ctx = getContext('2d');
ctx.clearRect(0,0,width,_height)
var a0 = angle(marks[reg[0]]) // angle of mark
var a1 = angle(reg[1]) // min angle of region
var a2 = angle(reg[2]) // max angle of region
// gradient
var x_center = getx(a0, r_avg);
var y_center = gety(a0, r_avg);
var grd = ctx.createRadialGradient(x_center, y_center, 2, x_center, y_center,
(reg[2] - reg[1]) * (width + _height) / 2 / (max - min))
grd.addColorStop(0, region_color[reg[0]])
grd.addColorStop(1, "transparent")
ctx.fillStyle = grd
ctx.beginPath()
ctx.moveTo(getx(a1, r_circle_min), gety(a1, r_circle_min))
arc_part(ctx, r_circle_min, a1, a2)
arc_part(ctx, r_circle_max, a2, a1)
ctx.lineTo(getx(a1, r_circle_min), gety(a1, r_circle_min))
ctx.fill()
reg_drawed = reg
}
function update_level() {
if (!reg_drawed || level > reg_drawed[2] || level < reg_drawed[1]) {
reg = find_region()
requestPaint()
if (has_gradient) {
var middle1 = orth(x, y, x + (hx - x) * 0.7, y + (hy - y) * 0.7, d_base + (d_head - d_base) * 0.7)
var grd = ctx.createLinearGradient(middle1[0], middle1[1], middle1[2], middle1[3])
grd.addColorStop(1, 'rgba(128,128,128,0.2)')
grd.addColorStop(0, "transparent")
ctx.fillStyle = grd
ctx.fill()
}
}
}
/*
Behavior on level {
NumberAnimation {
duration: 50
easing.amplitude: max - min
}
}
*/
onLevelChanged: {
arrow.requestPaint()
regions.update_level()
}
/*
MouseArea {
anchors.fill: parent
onClicked: {
level = Math.random() * (max - min) + min
}
}*/
}

View file

@ -79,13 +79,6 @@ Item {
}
}
/*
MouseArea {
anchors.fill: parent
onClicked: note = Math.random() * 100
}
*/
// Screen for actual note
Rectangle {
id: main_note

View file

@ -39,6 +39,6 @@ Item {
width: meter.width
height: width / 10
note: tuner.note * tuner.octave
note: tuner.note + toise.nb_notes * tuner.octave
}
}