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reworked text max width logic to use clipping rather than native max width functionality which scales the text (what was w3c thinking? no idea)

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This commit is contained in:
Eric Rowell 2012-05-12 17:11:57 -07:00
parent 4b1403f7fe
commit 05df078295
4 changed files with 73 additions and 20 deletions
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28
dist/kinetic-core.js vendored
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@ -3387,7 +3387,8 @@ Kinetic.Text = function(config) {
align: 'left',
verticalAlign: 'top',
padding: 0,
fontStyle: 'normal'
fontStyle: 'normal',
maxWidth: undefined
});
this.shapeType = "Text";
@ -3397,7 +3398,7 @@ Kinetic.Text = function(config) {
context.font = this.attrs.fontStyle + ' ' + this.attrs.fontSize + 'pt ' + this.attrs.fontFamily;
context.textBaseline = 'middle';
var textHeight = this.getTextHeight();
var textWidth = this.getTextWidth();
var textWidth = this.getMaxWidth() === undefined ? this.getTextWidth() : this.getMaxWidth();
var p = this.attrs.padding;
var x = 0;
var y = 0;
@ -3431,6 +3432,15 @@ Kinetic.Text = function(config) {
var tx = p + x;
var ty = textHeight / 2 + p + y;
// clipping region for max width
context.save();
if(this.attrs.maxWidth !== undefined) {
context.beginPath();
context.rect(x, y, textWidth + p, textHeight + p * 2);
context.closePath();
context.clip();
}
// draw text
if(this.attrs.textFill !== undefined) {
context.fillStyle = this.attrs.textFill;
@ -3448,6 +3458,7 @@ Kinetic.Text = function(config) {
context.strokeStyle = this.attrs.textStroke;
context.strokeText(this.attrs.text, tx, ty);
}
context.restore();
};
// call super constructor
Kinetic.Shape.apply(this, [config]);
@ -3622,6 +3633,19 @@ Kinetic.Text.prototype = {
width: metrics.width,
height: parseInt(this.attrs.fontSize, 10)
};
},
/**
* get max width in pixels
*/
getMaxWidth: function() {
return this.attrs.maxWidth;
},
/**
* set width
* @param {Number} max width
*/
setMaxWidth: function(maxWidth) {
this.attrs.maxWidth = maxWidth;
}
};
// extend Shape

29
dist/kinetic-core.min.js vendored
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File diff suppressed because one or more lines are too long

32
src/shapes/Text.js
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@ -29,7 +29,7 @@ Kinetic.Text = function(config) {
context.font = this.attrs.fontStyle + ' ' + this.attrs.fontSize + 'pt ' + this.attrs.fontFamily;
context.textBaseline = 'middle';
var textHeight = this.getTextHeight();
var textWidth = this.getTextWidth();
var textWidth = this.getMaxWidth() === undefined ? this.getTextWidth() : this.getMaxWidth();
var p = this.attrs.padding;
var x = 0;
var y = 0;
@ -63,16 +63,19 @@ Kinetic.Text = function(config) {
var tx = p + x;
var ty = textHeight / 2 + p + y;
// clipping region for max width
context.save();
if(this.attrs.maxWidth !== undefined) {
context.beginPath();
context.rect(x, y, textWidth + p, textHeight + p * 2);
context.closePath();
context.clip();
}
// draw text
if(this.attrs.textFill !== undefined) {
context.fillStyle = this.attrs.textFill;
if (this.attrs.maxWidth !== undefined) {
context.fillText(this.attrs.text, tx, ty, this.attrs.maxWidth);
}
else {
context.fillText(this.attrs.text, tx, ty);
}
context.fillText(this.attrs.text, tx, ty);
}
if(this.attrs.textStroke !== undefined || this.attrs.textStrokeWidth !== undefined) {
// defaults
@ -84,14 +87,9 @@ Kinetic.Text = function(config) {
}
context.lineWidth = this.attrs.textStrokeWidth;
context.strokeStyle = this.attrs.textStroke;
if (this.attrs.maxWidth !== undefined) {
context.strokeText(this.attrs.text, tx, ty, this.attrs.maxWidth);
}
else {
context.strokeText(this.attrs.text, tx, ty);
}
context.strokeText(this.attrs.text, tx, ty);
}
context.restore();
};
// call super constructor
Kinetic.Shape.apply(this, [config]);
@ -274,8 +272,8 @@ Kinetic.Text.prototype = {
return this.attrs.maxWidth;
},
/**
* set max width
* @param {float} max width
* set width
* @param {Number} max width
*/
setMaxWidth: function(maxWidth) {
this.attrs.maxWidth = maxWidth;

4
tests/js/unitTests.js
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@ -1888,7 +1888,8 @@ Test.prototype.tests = {
fontStyle: 'normal',
//draggable: true,
align: 'center',
verticalAlign: 'middle'
verticalAlign: 'middle',
maxWidth: 200
});
layer.add(text);
@ -1902,6 +1903,7 @@ Test.prototype.tests = {
test(text.getFontStyle() == 'normal', 'font style should be normal');
text.setPadding(20);
test(text.getPadding() === 20, 'padding should be 20');
test(text.getMaxWidth() === 200, 'max width should be 200');
stage.add(layer);