I am doing a diagram in jointjs and I have a rect with a text inside, but that text is so long that does not fit inside the rectangle. How can I cut lines inside it so it all fits at the same size of the rectangle ??
((escape by itself does not work))
You can use a utility that joint js has called breaktext, assigning the result to a var :
var wraptext = joint.util.breakText('yourtext|escapejs', {
width: 300
});
Then, set that var as text attr of the rect:
var rectname = new joint.shapes.custom.Rect({
size: { width: 680, height: 75 },
attrs: {
text: {
text: wraptext,
}
}
});
Width in this case would be the parameter that determines the long of each text break
Hope it helps !!
Related
I need to position text inputs at various places on a KonvaJS layer. I found the following code at https://konvajs.github.io/docs/sandbox/Editable_Text.html and I'm trying to understand the textPosition, stageBox, and areaPosition vars in this code. I want my stage centered in the browser window, but when I do that, the textarea (activated on dblclick) pops up way off to the left. I can't get a console readout of the x/y coordinates, so I can't visualize how the positioning works &, thus, how to change it. Can anyone explain, or point me in the right direction?
var text_overlay = new Konva.Layer();
stage.add(text_overlay);
var textNode = new Konva.Text({
text: 'Some text here',
x: 20,
y: 50,
fontSize: 20
});
text_overlay.add(textNode);
text_overlay.draw();
textNode.on('dblclick', () => {
// create textarea over canvas with absolute position
// first we need to find its position
var textPosition = textNode.getAbsolutePosition();
var stageBox = stage.getContainer().getBoundingClientRect();
var areaPosition = {
x: textPosition.x + stageBox.left,
y: textPosition.y + stageBox.top
};
// create textarea and style it
var textarea = document.createElement('textarea');
document.body.appendChild(textarea);
textarea.value = textNode.text();
textarea.style.position = 'absolute';
textarea.style.top = areaPosition.y + 'px';
textarea.style.left = areaPosition.x + 'px';
textarea.style.width = textNode.width();
textarea.focus();
textarea.addEventListener('keydown', function (e) {
// hide on enter
if (e.keyCode === 13) {
textNode.text(textarea.value);
text_overlay.draw();
document.body.removeChild(textarea);
}
});
})
// add the layer to the stage
stage.add(text_overlay);
UPDATE: I solved part of the problem--the textarea showing up way out of position. You need to use 2 divs in the HTML file instead of one, like so:
<div id="containerWrapper" align="center"><div id="container"></div></div>
Thanks to Frens' answer on Draw border edges of the Konvajs container Stage in html for that one!
I have to perform a very simple task: I want to display a piece of text inside a rectangle and the size of that rectangle should precisely be the width of the text.
In C++, it's fairly easy to do. Just define the QString and apply the QFontMetrics to get its width. Then define the rectangle graphics element to have that size. It's done within five minutes.
I have heard that QML is easier to use. Therefore, I was expecting to solve that problem in less than five minutes. I didn't, and I'm still stuck at it. Here's what I have tried:
Rectangle {
width: myText.contentWidth
height: myText.contentHeight
Text {
anchors.fill:parent
id: myText
font.family: "Helvetica"
font.pointSize: 50
text: qsTr("The string I want to display")
}
}
This doesn't work for some reason I don't understand. I have found a way to do it in a way that doesn't exactly suits my needs:
Rectangle {
width: 100
height: 100
MouseArea {
id: myMouseArea
anchors.fill: parent
onClicked: parent.width=myText.contentWidth
hoverEnabled: true
}
Text {
anchors.fill:parent
id: myText
font.family: "Helvetica"
font.pointSize: 50
text: qsTr("The string I want to display")
}
}
In this case, when I click the rectangle, it gets the correct width. Nevertheless, I am not interested in this solution, because I don't want to have to click to get a rectangle with the correct size.
I want that the rectangle's size gets the correct size whenever myText changes text. The use of onTextChanged in the Text item doesn't work either.
What am I missing here?
As far as I know, Font metrics were made available to developers in Qt 5.4, so they are relatively new, in QML. You got mainly FontMetrics and TextMetrics. A simple usage example:
import QtQuick 2.4
import QtQuick.Window 2.2
Window {
visible: true
width: 280; height: 150
TextMetrics {
id: textMetrics
font.family: "Arial"
font.pixelSize: 50
text: "Hello World"
}
Rectangle {
width: textMetrics.width
height: textMetrics.height
color: "steelblue"
Text {
text: textMetrics.text
font: textMetrics.font
}
}
}
As noted by Phrogz in the comment below, the TextMetrics type does not support measuring wrapped text.
EDIT
For what is worth I've never ever had the need to use metrics in QML. For me content* or painted* properties served the purpose and, as of Qt 5.12, they seem to work fine. Aka the following two solutions generate the correct visual behaviour:
// solution 1
Rectangle {
width: myText.contentWidth
height: myText.contentHeight
Text {
anchors.fill:parent
id: myText
font.family: "Helvetica"
font.pointSize: 50
text: qsTr("The string I want to display")
}
}
// solution 2
Rectangle {
width: myText.paintedWidth
height: myText.paintedHeight
Text {
anchors.fill:parent
id: myText
font.family: "Helvetica"
font.pointSize: 50
text: qsTr("The string I want to display")
}
}
I would prefer those solutions to the usage of metrics for such a simple use case as the one proposed by the OP. For the opposite case - fitting a text in a specific size - a combination of properties can do the trick, e.g.:
Rectangle {
anchors.centerIn: parent
width: 200
height: 30
Text {
anchors.fill: parent
text: "Wonderful Text"
minimumPixelSize: 2
fontSizeMode: Text.Fit
font.pixelSize: 200
horizontalAlignment: Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
}
}
Here the pixel size is simply over the top but the text still fits because a minimum size of 2 is set and the text has a clear fitting policy and clear boundaries, defined by the anchoring.
I'm sure Label component will do the job:
import QtQuick 2.1
import QtQuick.Controls 2.4
ApplicationWindow {
visible: true
Column {
Repeater {
model: [
{"color": "red", "radius": 1},
{"color": "green", "radius": 2},
{"color": "blue", "radius": 3}
]
Label {
padding: 0
text: modelData.color
font.family: "Helvetica"
font.pointSize: 50
background: Rectangle {
color: modelData.color
radius: modelData.radius
}
}
}
}
}
You don't need to use anchors.fill: parent for Text item because size of Text's parent depends on size of Text itself. It's cause binding loop.
This must works fine.
Rectangle {
width: myText.contentWidth
height: myText.contentHeight
Text {
id: myText
font.family: "Helvetica"
font.pointSize: 50
text: qsTr("The string I want to display")
}
}
Imagine I have Rect element and I wish to decorate it with a small (say 16x16) PNG image in the upper left. I am unable to determine how to achieve that task. I have studied the docs but have (so far) been unable to find a sample or reference on how to achieve that task. Does anyone have a recipe or a sample pointer that they would be willing to share to help me achieve my goal?
Better is to create your own custom shape that has a rectangle, image and text. This gives you much more flexibility and you don't have to have two elements in order to express one shape. Your shape decorated with a little image in the top left corner may look like:
joint.shapes.basic.DecoratedRect = joint.shapes.basic.Generic.extend({
markup: '<g class="rotatable"><g class="scalable"><rect/></g><image/><text/></g>',
defaults: joint.util.deepSupplement({
type: 'basic.DecoratedRect',
size: { width: 100, height: 60 },
attrs: {
'rect': { fill: '#FFFFFF', stroke: 'black', width: 100, height: 60 },
'text': { 'font-size': 14, text: '', 'ref-x': .5, 'ref-y': .5, ref: 'rect', 'y-alignment': 'middle', 'x-alignment': 'middle', fill: 'black' },
'image': { 'ref-x': 2, 'ref-y': 2, ref: 'rect', width: 16, height: 16 }
}
}, joint.shapes.basic.Generic.prototype.defaults)
});
And you can use it like this in your diagrams:
var decoratedRect = new joint.shapes.basic.DecoratedRect({
position: { x: 150, y: 80 },
size: { width: 100, height: 60 },
attrs: {
text: { text: 'My Element' },
image: { 'xlink:href': 'http://placehold.it/16x16' }
}
});
graph.addCell(decoratedRect);
Note how is the shape specified, the important bits are the markup, type and the attrs object that references the SVG elements in the markup by normal CSS selectors (here just tag selectors but you can use classes if you want). For the image tag, we take advantage of the JointJS special attributes for relative positioning (ref, ref-x and ref-y). With these attributes, we position the image relatively to the top left corner of the rect element and we offset it by 2px from the top edge (ref-y) and 2px from the left edge (ref-x).
One note: It is important that the type attribute ('basic.DecoratedRect') matches the namespace the shape is defined in (joint.shapes.basic.DecoratedRect). This is because when JointJS re-constructs graphs from JSON, it looks at the type attribute and makes a simple lookup to the joint.shapes namespace to see if there is a shape defined for this type.
We can create an element type for an image using the following recipe:
var image = new joint.shapes.basic.Image({
position : {
x : 100,
y : 100
},
size : {
width : 16,
height : 16
},
attrs : {
image : {
"xlink:href" : "images/myImage.png",
width : 16,
height : 16
}
}
});
graph.addCell(image);
This will position the image at x=100,y=100. It is important to make the size width/height match the attrs/image width/height and be the width/height of the image itself.
Although this doesn't decorate a previous element, it can be positioned over a previous element achieving the desired effect.
How to set non pixels position?
I try this
var stack = { "dir1": "down", "dir2": "right", "firstpos1": 50, "firstpos2": 50 };
But I this it is bad because of different screen resolution.
Necroposting, but may help to other searchers. My solution without js recalculations:
js:
new PNotify({
...
addclass: 'pnotify-center'
});
css:
.pnotify-center {
right: calc(50% - 150px) !important;
}
there's a similar question with an answer here. As per the first example in the stacks documentation, you can center the initial position of the notification by setting the top/left css propreties in before_open. You also need to reposition the notification everytime the window is resized.
function get_center_pos(width, top) {
// top is empty when creating a new notification and is set when recentering
if (!top) {
top = 30;
// this part is needed to avoid notification stacking on top of each other
$('.ui-pnotify').each(function() {
top += $(this).outerHeight() + 20;
});
}
return {
"top": top,
"left": ($(window).width() / 2) - (width / 2)
}
}
$(document).ready(function() {
new PNotify({
title: "this is center",
text: "blablabla",
opacity: 0.90,
type: "info",
width: "390px",
before_open: function(PNotify) {
PNotify.get().css(get_center_pos(PNotify.get().width()));
}
});
$(window).resize(function() {
$(".ui-pnotify").each(function() {
$(this).css(get_center_pos($(this).width(), $(this).position().top))
});
});
});
I have a canvas built using fabricJS with the dimension of 600x500. I have added an image to this canvas which is of size 200x300 and also a text element just below it.
$canvasObj.toDataURL();
exports the whole canvas area including the white spaces surrounding the design on the canvas.
Is there a way to get the cropped output of the design on the canvas alone instead of all the whitespace?
This can be done by cloning objects to a group, getting the group boundingRect, and then passing the boundingRect parameters to toDataUrl() function (see fiddle).
e.g.
// make a new group
var myGroup = new fabric.Group();
canvas.add(myGroup);
// ensure originX/Y 'center' is being used, as text uses left/top by default.
myGroup.set({ originX: 'center', originY: 'center' });
// put canvas things in new group
var i = canvas.getObjects().length;
while (i--) {
var objType = canvas.item(i).get('type');
if (objType==="image" || objType==="text" || objType==="itext" || objType==="rect") {
var clone = fabric.util.object.clone(canvas.item(i));
myGroup.addWithUpdate(clone).setCoords();
// remove original lone object
canvas.remove(canvas.item(i));
}
}
canvas.renderAll();
// get bounding rect for new group
var i = canvas.getObjects().length;
while (i--) {
var objType = canvas.item(i).get('type');
if (objType==="group") {
var br = canvas.item(i).getBoundingRect();
}
}
fabric.log('cropped png dataURL: ', canvas.toDataURL({
format: 'png',
left: br.left,
top: br.top,
width: br.width,
height: br.height
}));
p.s. I should probably mention that i've not worked with image types, so i just guessed that it's called 'image'..