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I'm creating a timeline with Konva and the entire timeline (stage) is draggable on all directions but I have an axis with all the years of the timeline (Konva group) that I want to restrict its movement so that it only moves horizontally.
I can't use dragBoundFunc as it will restrict the movement on all nodes of the timeline.
I tried to change the position of the element using the dragmove event:
stage.on("dragmove", function(evt) {
xaxis.y(0);
});
But the xaxis still moves on all direction while dragging the stage.
I could also use different draggable layers for the axis and the timeline itself, but then when I drag the axis it wouldn't move the timeline and the same if I move the timeline.
As the simplest solution, you can just make sure that the absolute position of your timelime group is the same:
stage.on("dragmove", function(evt) {
// read absolute position
const oldAbs = xaxis.absolutePosition();
// set new absolute position, but make sure x = 0
xaxis.absolutePosition({
x: oldAbs.x,
y: 0
});
});
Here is a slightly more capable version that allows vertical drag of the event layer whilst keeping the time line axis visible for reference. This uses two layers - one to act as the background containing the time line and grid, whilst the second shows the events.
The key technique here is using the dragMove event listener on the draggable event layer to move the background layer in sync horizontally but NOT vertically. Meanwhile the event layer is also constrained with a dragBound function to stop silly UX.
An improvement would be to add clipping to the event layer so that when dragged down it would not obscure the timeline.
var stageWidth = 800,
stageHeight = 300,
timeFrom = 1960,
timeTo = 2060,
timeRange = timeTo - timeFrom,
timeLineWidth = 1000,
timeSteps = 20, // over 100 yrs = 5 year intervals
timeInt = timeRange / timeSteps,
timeLineStep = timeLineWidth / timeSteps,
yearWidth = timeLineWidth / timeRange,
plotHeight = 500,
events = [{
date: 1964,
desc: 'Born',
dist: 10
},
{
date: 1966,
desc: 'England win world cup - still celebrating !',
dist: 20
},
{
date: 1968,
desc: 'Infant school',
dist: 30
},
{
date: 1975,
desc: 'Secondary school',
dist: 50
},
{
date: 1981,
desc: 'Sixth form',
dist: 7
},
{
date: 1983,
desc: 'University',
dist: 30
},
{
date: 1986,
desc: 'Degree, entered IT career',
dist: 50
},
{
date: 1990,
desc: 'Marriage #1',
dist: 0
},
{
date: 1996,
desc: 'Divorce #1',
dist: 0
},
{
date: 1998,
desc: 'Marriage #2 & Son born',
dist: 90
},
{
date: 2000,
desc: 'World did not end',
dist: 20
},
{
date: 2025,
desc: 'Retired ?',
dist: 0
},
{
date: 2044,
desc: 'Enters Duncodin - retirement home for IT workers',
dist: 0
},
{
date: 2054,
desc: 'Star dust',
dist: 0
}
]
function setup() {
// Set up a stage and a shape
stage = new Konva.Stage({
container: 'konva-stage',
width: stageWidth,
height: stageHeight
});
// bgLayer is the background with the grid, timeline and date text.
var bgLayer = new Konva.Layer({
draggable: false
})
stage.add(bgLayer);
for (var i = 0, max = timeSteps; i < max; i = i + 1) {
bgLayer.add(new Konva.Line({
points: [(i * timeLineStep) + 0.5, 0, (i * timeLineStep) + .5, plotHeight],
stroke: 'cyan',
strokeWidth: 1
}))
bgLayer.add(new Konva.Text({
x: (i * timeLineStep) + 4,
y: 260,
text: timeFrom + (timeInt * i),
fontSize: 12,
fontFamily: 'Calibri',
fill: 'magenta',
rotation: 90,
listening: false
}));
}
for (var i = 0, max = plotHeight; i < max; i = i + timeLineStep) {
bgLayer.add(new Konva.Line({
points: [0, i + 0.5, timeLineWidth, i + .5],
stroke: 'cyan',
strokeWidth: 1
}))
}
// add timeline
var timeLine = new Konva.Rect({
x: 0,
y: 245,
height: 1,
width: timeLineWidth,
fill: 'magenta',
listening: false
});
bgLayer.add(timeLine)
// eventLayer contains only the event link line and text.
var eventLayer = new Konva.Layer({
draggable: true,
// the dragBoundFunc returns an object as {x: val, y: val} in which the x is constricted to stop
// the user dragging out of sight, and the y is not allowed to change.
// ! position of bgLayer is moved in x axis in sync with eventLayer via dragMove event
dragBoundFunc: function(pos) {
return {
x: function() {
var retX = pos.x;
if (retX > 20) { // if the left exceeds 20px from left edge of stage
retX = 20;
} else if (retX < (stageWidth - (timeLineWidth + 50))) { // if the right exceeds 50 px from right edge of stage
retX = stageWidth - (timeLineWidth + 50);
}
return retX;
}(),
y: function() {
var retY = pos.y;
if (retY < 0) {
retY = 0;
} else if (retY > 200) {
retY = 200;
}
return retY;
}()
};
}
});
stage.add(eventLayer);
// ! position of bgLayer is moved in x axis in sync with eventLayer via dragMove event of eventLayer.
eventLayer.on('dragmove', function() {
var pos = eventLayer.position();
var bgPos = bgLayer.position();
bgLayer.position({
x: pos.x,
y: bgPos.y
}); // <--- move the bgLayer in sync with the event eventLayer.
stage.draw()
});
for (var i = 0, max = events.length; i < max; i = i + 1) {
var event = events[i];
var link = new Konva.Rect({
x: yearWidth * (event.date - timeFrom),
y: 200 - event.dist,
width: 1,
height: 55 + event.dist,
fill: 'magenta',
listening: false
});
eventLayer.add(link)
var eventLabel = new Konva.Text({
x: yearWidth * (event.date - timeFrom) - 5,
y: 190 - event.dist,
text: event.date + ' - ' + event.desc,
fontSize: 16,
fontFamily: 'Calibri',
fill: 'magenta',
rotation: -90,
listening: false
});
eventLayer.add(eventLabel);
var dragRect = new Konva.Rect({
x: 0,
y: 0,
width: timeLineWidth,
height: 500,
opacity: 0,
fill: 'cyan',
listening: true
});
eventLayer.add(dragRect);
dragRect.moveToTop()
}
stage.draw()
}
var stage, eventLayer;
setup()
.konva-stage {
width: 100%;
height: 100%;
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/4.0.13/konva.js"></script>
<p>Drag the timeline left & right AND up & down...</p>
<div id="konva-stage"></div>
Just for fun, a stripped down version of my answers showing the ondrag() function without all the timeline frills.
var stage;
function setup() {
// Set up a stage and a shape
stage = new Konva.Stage({
container: 'konva-stage',
width: 600,
height: 300
});
// layer1.
var layer1 = new Konva.Layer({
draggable: false
})
stage.add(layer1);
var ln1 = new Konva.Line({
points: [10, 0, 10, 20, 10, 10, 0, 10, 20, 10],
stroke: 'cyan',
strokeWidth: 4
});
layer1.add(ln1);
var layer2 = new Konva.Layer({
draggable: true,
});
stage.add(layer2);
var ln2 = new Konva.Line({
points: [10, 0, 10, 20, 10, 10, 0, 10, 20, 10],
stroke: 'magenta',
strokeWidth: 4
});
layer2.add(ln2);
// position the crosses on the canvas
ln1.position({
x: 100,
y: 80
});
ln2.position({
x: 100,
y: 40
});
// ! position of layer1 is moved in x axis in sync with layer2 via dragMove event of layer2.
layer2.on('dragmove', function() {
var pos = layer2.position();
var bgPos = layer1.position();
layer1.position({
x: pos.x,
y: bgPos.y
}); // <--- move layer1 in sync with layer2.
stage.draw()
});
stage.draw()
}
setup()
.konva-stage {
width: 100%;
height: 100%;
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/4.0.13/konva.js"></script>
<p>Drag the upper cross - only one moves vertically whilst the other is contrained in the y-axis. Both move in sync on the x-axis</p>
<div id="konva-stage"></div>
It is not entirely clear what you are asking but I have assumed you want to constrain the drag of the timeline so that it gives good UX. See working snippet below. The majority of the code is setup of the timeline. The important piece is
Include a rect covering the entire timeline that has zero opacity and is listening for mouse events.
Provide the layer with a dragBoundFunc that returns an object as {x: val, y: val} in which the x is constricted to stop the user dragging out of sight horizontally, and the y is not allowed to change. If you think of the rect and the stage as rectangles then the math is not difficult to comprehend. If your timeline is vertical, swap the x & y behaviour.
var stageWidth = 800,
timeFrom = 1960,
timeTo = 2060,
range = timeTo - timeFrom,
timeLineWidth = 1000;
yearWidth = timeLineWidth / range,
events = [{
date: 1964,
desc: 'Born'
},
{
date: 1968,
desc: 'Infant school'
},
{
date: 1975,
desc: 'Secondary school'
},
{
date: 1981,
desc: 'Sixth form'
},
{
date: 1983,
desc: 'University'
},
{
date: 1986,
desc: 'Degree, entered IT career'
},
{
date: 1990,
desc: 'Marriage #1'
},
{
date: 1998,
desc: 'Marriage #2'
},
{
date: 1999,
desc: 'Son born'
},
{
date: 2025,
desc: 'Retired ?'
},
{
date: 2044,
desc: 'Enters Duncodin - retirement home for IT workers'
},
{
date: 2054,
desc: 'Star dust'
}
]
function setup() {
// Set up a stage and a shape
stage = new Konva.Stage({
container: 'konva-stage',
width: stageWidth,
height: 500
});
layer = new Konva.Layer({
draggable: true,
// the dragBoundFunc returns an object as {x: val, y: val} in which the x is constricted to stop
// the user dragging out of sight, and the y is not allowed to change.
dragBoundFunc: function(pos) {
return {
x: function() {
retX = pos.x;
if (retX > 20) {
retX = 20;
} else if (retX < (stageWidth - (timeLineWidth + 50))) {
retX = stageWidth - (timeLineWidth + 50);
}
return retX;
}(),
y: this.absolutePosition().y
};
}
});
stage.add(layer);
// add timeline
var timeLine = new Konva.Rect({
x: 0,
y: 245,
height: 10,
width: timeLineWidth,
fill: 'magenta',
listening: false
});
layer.add(timeLine)
for (var i = 0, max = events.length; i < max; i = i + 1) {
var event = events[i];
var link = new Konva.Rect({
x: yearWidth * (event.date - timeFrom),
y: 200,
width: 5,
height: 55,
fill: 'magenta',
listening: false
});
layer.add(link)
var timeLabel = new Konva.Text({
x: yearWidth * (event.date - timeFrom) + 10,
y: 265,
text: event.date,
fontSize: 16,
fontFamily: 'Calibri',
fill: 'magenta',
rotation: 90,
listening: false
});
layer.add(timeLabel);
var eventLabel = new Konva.Text({
x: yearWidth * (event.date - timeFrom) - 5,
y: 190,
text: event.desc,
fontSize: 16,
fontFamily: 'Calibri',
fill: 'magenta',
rotation: -90,
listening: false
});
layer.add(eventLabel);
var dragRect = new Konva.Rect({
x: 0,
y: 0,
width: timeLineWidth,
height: 500,
opacity: 0,
fill: 'cyan',
listening: true
});
layer.add(dragRect);
dragRect.moveToTop()
}
stage.draw()
}
var stage, layer;
setup()
.konva-stage {
width: 100%;
height: 100%;
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/4.0.13/konva.js"></script>
<p>Drag the timeline...</p>
<div id="konva-stage"></div>
I have series legends as scrollbar as demo-ed in this fiddle
http://jsfiddle.net/BlackLabel/kb4gu5rn/
How can I draw series legend marker ("circle"/"square"/"diamond" etc..) instead of line
var $line = $('<div>')
.css({
width: 16,
position: 'absolute',
left: -20,
top: 8,
borderTop: '2px solid ' + (series.visible ? series.color :
options.itemHiddenStyle.color)
})
.appendTo($legendItem);
Also upon hover in this legendItemList I would like to trigger the mouseOver event on the series.. To highlight the series(or data points) in the chart for easy co-visualization
I added this handler, but it doesnt work
$legendItem.hover(function () {
series.onMouseOver();
});
Thanks for your help
You can use Highcharts.SVGRenderer class to add a specific legend marker symbol.
To highlight the series use setState('hover):
var chart = Highcharts.chart({...},
function(chart) {
var options = chart.options.legend,
legend = chart.legend;
/**
* What happens when the user clicks the legend item
*/
function clickItem(series, $legendItem, symbolLine, symbolSVG) {
series.setVisible();
$legendItem.css(
options[series.visible ? 'itemStyle' : 'itemHiddenStyle']
);
symbolLine.attr({
stroke: series.visible ? series.color : options.itemHiddenStyle.color
});
symbolSVG.attr({
fill: series.visible ? series.color : options.itemHiddenStyle.color
});
}
// Create the legend box
var $legend = $('<div>')
.css({
width: 110,
maxHeight: 210,
padding: 10,
position: 'absolute',
overflow: 'auto',
right: 10,
top: 40,
borderColor: options.borderColor,
borderWidth: options.borderWidth,
borderStyle: 'solid',
borderRadius: options.borderRadius
})
.appendTo(chart.container);
$.each(chart.series, function(i, series) {
// crete the legend item
var $legendItem = $('<div>')
.css({
position: 'relative',
marginLeft: 20
})
.css(options[series.visible ? 'itemStyle' : 'itemHiddenStyle'])
.html(series.name)
.appendTo($legend);
// create the line with each series color
var symbolEl = $('<div>');
var renderer = new Highcharts.Renderer(
symbolEl[0],
16,
10
);
var symbolLine = renderer
.path([
'M',
0,
5,
'L',
16,
5
])
.attr({
'stroke-width': 2,
stroke: series.color
})
.add();
var symbolSVG = renderer.symbol(
series.symbol,
3,
0,
10,
10,
Highcharts.merge(series.options.marker, {
width: 10,
height: 10
})
).attr({
fill: series.color
})
.add();
symbolEl.css({
position: 'absolute',
left: -20,
top: 2
}).appendTo($legendItem);
// click handler
$legendItem.hover(function() {
chart.series.forEach(function(s) {
if (s !== series) {
s.setState('inactive');
} else {
series.setState('hover');
}
});
}, function() {
chart.series.forEach(function(s) {
s.setState('normal');
});
});
$legendItem.click(function() {
clickItem(series, $legendItem, symbolLine, symbolSVG);
});
});
});
Live demo: http://jsfiddle.net/BlackLabel/mfvh9ubq/
API Reference:
https://api.highcharts.com/class-reference/Highcharts.Series#setState
https://api.highcharts.com/class-reference/Highcharts.SVGRenderer#symbol
I would like to know how to put the box in foreground and the image in background. I try moveToTop(), setZIndex() on box but when i drag it the image go to foreground.
one(){
var stage = new Konva.Stage({
container: 'container',
width: 400, height: 250
});
var layer = new Konva.Layer();
var imageObj = new Image();
imageObj.onload = function() {
var yoda = new Konva.Image({
image: imageObj,
});
// yoda.setZIndex(2);
layer.add(yoda);
};
imageObj.src = '/assets/images/vert.png';
this.two(stage, layer)
}
two(stage: Konva.Stage, layer) {
var box = new Konva.Rect({
x: 20, y: 20,
width: 100, height: 50,
fill: '#00D2FF', stroke: 'black',
strokeWidth: 4,
draggable: true
});
// box.setZIndex(1); box.moveToTop()
layer.add(box);
stage.add(layer)
}
I took your code and made a plain JS working snippet so that I could experiment. See below.
You were very close with your line
// yoda.setZIndex(2);
layer.add(yoda);
except that the z-index affecting attributes work on the position of the shape in the layer. Therefore the shape MUST BE IN A LAYER for the call to work. See my code where I use
layer.add(yoda);
yoda.moveToBottom()
meaning the layer-affecting call happens AFTER adding yoda to the layer.
You may also wish to consider using multiple layers if, say, you will have many shapes that need to be on one or another layer.
var stage = new Konva.Stage({
container: 'container',
width: 400, height: 250
});
var layer = new Konva.Layer();
var imageObj = new Image();
imageObj.onload = function() {
var yoda = new Konva.Image({
width: 100, height: 100,
image: imageObj,
});
layer.add(yoda);
yoda.moveToBottom(); // <<<< must add to the layer BEFORE setting the z-order.
layer.draw();
};
imageObj.src = 'https://i.stack.imgur.com/WxBvk.png';
two(stage, layer)
function two(stage, layer) {
var box = new Konva.Rect({
x: 20, y: 20,
width: 100, height: 50,
fill: '#00D2FF', stroke: 'black',
strokeWidth: 4,
draggable: true
});
layer.add(box);
}
stage.add(layer)
stage.draw();
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.rawgit.com/konvajs/konva/1.6.5/konva.min.js"></script>
<div id='container' style="display: inline-block; width: 300px, height: 200px; background-color: silver; overflow: hidden; position: relative;"></div>
I just check a post regarding making a label with design using renderer.label and plotline animate (Add design to plotLabel Highcharts). My question is, Is there a way to use chart.renderer.path as the moving horizontal gridline instead of using the common plotline ? I am a bit confuse on how to use the renderer.path. Can you help me with it? Really appreciate your help with this.
const plotband = yAxis.addPlotLine({
value: 66,
color: 'red',
width: 2,
id: 'plot-line-1',
/* label: {
text: 66,
align: 'right',
y: newY,
x: 0
}*/
});
const labelOffset = 15
const plotbandLabel = this.renderer.label((66).toFixed(2), chart.plotLeft + chart.plotWidth - 8, yAxis.toPixels(66) - labelOffset, 'rect').css({
color: '#FFFFFF'
}).attr({
align: 'right',
zIndex: 99,
fill: 'rgba(0, 0, 0, 0.75)',
padding: 8
})
.add()
setInterval(function() {
var x = (new Date()).getTime(), // current time
y = Math.round(Math.random() * 100);
series.addPoint([x, y], true, true);
plotLine = yAxis.plotLinesAndBands[0].svgElem;
d = plotLine.d.split(' ');
newY = yAxis.toPixels(y) - d[2];
plotlabel = yAxis.plotLinesAndBands[0].label;
plotbandLabel.animate({
y: yAxis.toPixels(y) - labelOffset
}, {
duration: 400,
step: function() {
this.attr({
text: yAxis.toValue(this.y + labelOffset).toFixed(2)
})
},
complete: function() {
this.attr({
text: y.toFixed(2)
})
}
}),
plotLine.animate({
translateY: newY
}, 400);
Please see this jsfiddle I got from the previous post. http://jsfiddle.net/x8vhp0gr/
Thank you so much
I modified demo provided by you. Now, instead of adding a plot line, path is created.
pathLine = this.renderer.path([
'M',
chart.plotLeft,
initialValue,
'L',
chart.plotWidth + chart.plotLeft,
initialValue
])
.attr({
'stroke-width': 2,
stroke: 'red'
})
.add(svgGroup);
API Reference:
http://api.highcharts.com/highcharts/Renderer.path
Example:
http://jsfiddle.net/a64e5qkq/
I'm having a few issues with the last couple of pieces on my iOS app built with Appcelerator Titanium.
The app sample below shows one of my windows which allows the user to tap a view (which contains a word), which flips around to show the same word in a different language. The user can then tap the same view again and it animates back to the original position showing the original word.
When the user wants to move onto another word, they simple swipe on the view and it brings in the next word.
Here are the issues i'm experiencing;
If a user swipes super fast through loads of words, then taps to flip, it crashes.
If a user taps the view to flip the view around sometimes the second word flashes up before the animation takes place, it should only be seen as the view comes around into view.
and
3) The user can opt to drop the word, which when tapped performs a database update and then reloads the function and brings a new word in. Great for the first time you use it, but on the 2nd, 3rd, 4th time, the alertbox pops up multiple times rather than once.
Now, I suspect I'm doing something wrong here, but I can't work it out, i've moved code around to make sure labels aren't displaying before they should, but it keeps happening.
Can anyone shed any light on 1 or all of my points? I'm about to lose my mind!
I'm using Titanium 3.20 for iOS
Many thanks
Simon
var win = Titanium.UI.currentWindow;
var selectedlanguage = Ti.App.Properties.getString('langSelect');
// detect height
if (Titanium.Platform.displayCaps.platformHeight == 480) {
var MVTOP = 115;
var tapTOP = 83;
var swipeTOP = 275;
} else {
var MVTOP = 165;
var tapTOP = 133;
var swipeTOP = 325;
}
var masterView = Ti.UI.createView({
backgroundColor: '#FFF',
top: MVTOP,
width: 300,
height: 140,
opacity: 0.7
});
var state = true;
win.add(masterView);
var front = Ti.UI.createView({
backgroundColor: '#FFF',
top: 0,
left: 0,
width: 300,
height: 140,
opacity: 1.0,
touchEnabled: false
});
var back = Titanium.UI.createView({
backgroundColor: '#FFF',
top: 0,
left: 0,
width: 300,
height: 140,
opacity: 1.0,
touchEnabled: false
});
if (win.section == 'word_expressions') {
var label1 = Ti.UI.createLabel({
//text: verb_german,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 20
},
top: 50
});
var label2 = Ti.UI.createLabel({
//text: verb_english,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 20
},
top: 50
});
} else {
var label1 = Ti.UI.createLabel({
//text: verb_german,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 30
},
top: 50
});
var label2 = Ti.UI.createLabel({
//text: verb_english,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 30
},
top: 50
});
}
var dropButton = Ti.UI.createButton({
width: 120,
height: 41,
right: 15,
bottom: 15,
title: 'drop word',
backgroundColor: '#fd0100',
color: '#FFF',
font: {
fontSize: 15
},
opacity: 1.0
});
win.add(dropButton);
function loadWords() {
// get the section to query for the database
var wordSection = win.section;
// get a random pair of words
var db = Ti.Database.open('germanV6');
var rows = db.execute('SELECT * FROM Words WHERE ' + wordSection + ' = 1 AND word_dropped = 0 ORDER BY RANDOM() LIMIT 1');
var x = 0;
while (rows.isValidRow()) {
if (selectedlanguage == 'en') {
var word_1 = rows.fieldByName('word_english');
var word_2 = rows.fieldByName('word_german');
} else if (selectedlanguage == 'de') {
var word_2 = rows.fieldByName('word_english');
var word_1 = rows.fieldByName('word_german');
}
var word_id = rows.fieldByName('word_id');
rows.next();
}
// close database
rows.close();
var state = true;
label1.text = word_1;
front.add(label1);
masterView.add(front);
label2.text = word_2;
back.add(label2);
masterView.addEventListener('click', function (e) {
switch (state) {
case true:
Ti.API.info('true');
masterView.animate({
view: back,
transition: Ti.UI.iPhone.AnimationStyle.FLIP_FROM_LEFT
});
break;
case false:
Ti.API.info('false');
label1.text = word_1;
masterView.animate({
view: front,
transition: Ti.UI.iPhone.AnimationStyle.FLIP_FROM_RIGHT
});
break;
}
state = !state;
});
var eventListener = function () {
// update the DB to tell it the word has been dropped
var dbDelete = Ti.Database.open('germanV6');
var rowsDelete = dbDelete.execute('UPDATE Words SET word_dropped=1 WHERE word_id=' + word_id);
// pop an alert to notify the user the word has been dropped
var alertDialog = Titanium.UI.createAlertDialog({
title: 'Word Dropped',
message: 'This word has been dropped!' + word_id,
buttonNames: ['OK']
});
// show the message
alertDialog.show();
// load in a new word
//loadWords();
alertDialog.addEventListener('click', function (j) {
loadWords();
});
};
}
// fire the function and load our words into play
loadWords();
var tapLabel = Ti.UI.createLabel({
width: 200,
top: tapTOP,
text: 'tap to flip',
textAlign: 'center',
color: '#FFF',
font: {
fontSize: 15
}
});
var swipeLabel = Ti.UI.createLabel({
width: 320,
top: swipeTOP,
text: 'swipe for next word',
textAlign: 'center',
color: '#FFF',
font: {
fontSize: 15
}
});
win.add(tapLabel);
win.add(swipeLabel);
var grammarButton = Ti.UI.createButton({
width: 120,
height: 41,
left: 15,
bottom: 15,
title: 'verb tables',
backgroundColor: '#ffff01',
color: '#000',
font: {
fontSize: 15
},
opacity: 1.0
});
win.add(grammarButton);
swipeLabel.addEventListener('swipe', function (e) {
// reload the new word
loadWords();
});
masterView.addEventListener('swipe', function (e) {
// reload the new word
loadWords();
});
grammarButton.addEventListener('click', function (e) {
var newWin = Titanium.UI.createWindow({
url: 'verb_table.js',
backgroundImage: '/images/background_random.jpg',
backgroundColor: '#FFF',
barColor: '#000',
translucent: true,
color: '#FFF',
navTintColor: '#FFF',
titleControl: Ti.UI.createLabel({
text: 'Verb Table',
color: '#FFF'
}),
statusBarStyle: Titanium.UI.iPhone.StatusBar.LIGHT_CONTENT,
backButtonTitle: ''
});
newWin.nav = win.nav;
win.nav.openWindow(newWin, {
animated: true
});
});
loadWords() adds an event listener to masterView every time it is called. Probably the source of the crash. Do the Ti.API.info calls build up over time of using the app? I'd expect you should see it popping out 1 then 2 then 3... as it runs along.
Is there missing code? The eventListener function is defined, but I can't find where it is called. This function then has another listener that then calls loadWords again adding more listeners. the name of the function eventListener was difficult to look for because all the addEventListener references come up in a search because they match. I'd change the name of that function to something more distinct. It might be getting called in there, but I gave up looking for it.
There is something up with this code. I would expect that the var label1 and var label2 aren't the ones you are adding to the view later on, but I would expect them to go out of scope when they leave your blocks {}. I would move the var label1 and var label2 outside this if-else and just have label1 = Ti.UI... and the label2 = Ti.UI.. in there.
var label1;
var label2;
if (win.section == 'word_expressions') {
label1 = Ti.UI.createLabel({ // FIX
//text: verb_german,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 20
},
top: 50
});
label2 = Ti.UI.createLabel({ // FIX
//text: verb_english,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 20
},
top: 50
});
} else {
label1 = Ti.UI.createLabel({ // FIX
//text: verb_german,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 30
},
top: 50
});
label2 = Ti.UI.createLabel({ // FIX
//text: verb_english,
text: '',
textAlign: 'center',
color: '#000',
font: {
fontSize: 30
},
top: 50
});
}
front.add(label1);
back.add(label2);
Variable Scrope
http://msdn.microsoft.com/en-us/library/bzt2dkta(v=vs.94).aspx
I would say you need to rethink the loadWords function. It is perhaps doing way too much and the source of all the issues. The masterView.addEventListener should be moved out. The alertDialog should be setup a different way as well. Perhaps moving that code to generate the alert outside of the omni function loadWords.
The database is opened repeatedly inside loadWords, but never closed. You did close the row, but forgot the db.
front.add and back.add aren't necessary in the loadWords function, you should have these after the If-Else statement where you are defining them. Keep the code in there that updates, their .text properties.
Looking closer at the label definitions you are defining them exactly the same aside from the font size. I would fix that to only change the font inside the IF-ELSE.
Fix the place where you detect height as well. Move all the var [variable names] out of the block and define them once. In the IF-ELSE then assign them the correct values.