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cleaned up grid extension

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git-svn-id: http://svg-edit.googlecode.com/svn/trunk@2405 eee81c28-f429-11dd-99c0-75d572ba1ddd
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Bruno Heridet
2013-02-16 11:10:26 +00:00
parent dd6b28d886
commit 424bf3001b
1 changed files with 90 additions and 122 deletions
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212
editor/extensions/ext-grid.js
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@@ -12,119 +12,94 @@
// 1) units.js
// 2) everything else
svgEditor.addExtension("view_grid", function(s) {
svgEditor.addExtension('view_grid', function() {
var svgdoc = document.getElementById("svgcanvas").ownerDocument,
svgns = "http://www.w3.org/2000/svg",
dims = svgEditor.curConfig.dimensions,
svgroot = s.svgroot;
var svgdoc = document.getElementById('svgcanvas').ownerDocument,
svgns = 'http://www.w3.org/2000/svg',
showGrid = false,
assignAttributes = svgCanvas.assignAttributes,
hcanvas = document.createElement('canvas'),
canvBG = $('#canvasBackground'),
units = svgedit.units.getTypeMap(),
intervals = [0.01, 0.1, 1, 10, 100, 1000];
var showGrid = false;
var assignAttributes = svgCanvas.assignAttributes;
var hcanvas = document.createElement('canvas');
$(hcanvas).hide().appendTo('body');
$(hcanvas).hide().appendTo('body');
var canvasgrid = svgdoc.createElementNS(svgns, "svg");
assignAttributes(canvasgrid, {
'id': 'canvasGrid',
'width': '100%',
'height': '100%',
'x': 0,
'y': 0,
'overflow': 'visible',
'display': 'none'
});
var canvBG = $('#canvasBackground');
canvBG.append(canvasgrid);
var canvasGrid = svgdoc.createElementNS(svgns, 'svg');
assignAttributes(canvasGrid, {
'id': 'canvasGrid',
'width': '100%',
'height': '100%',
'x': 0,
'y': 0,
'overflow': 'visible',
'display': 'none'
});
canvBG.append(canvasGrid);
// grid-pattern
var gridPattern = svgdoc.createElementNS(svgns, "pattern");
assignAttributes(gridPattern, {
'id': 'gridpattern',
'patternUnits': 'userSpaceOnUse',
'x': 0, //-(value.strokeWidth / 2), // position for strokewidth
'y': 0, //-(value.strokeWidth / 2), // position for strokewidth
'width': 100,
'height': 100
});
var gridimg = svgdoc.createElementNS(svgns, "image");
assignAttributes(gridimg, {
'x': 0,
'y': 0,
'width': 100,
'height': 100
});
gridPattern.appendChild(gridimg);
$('#svgroot defs').append(gridPattern);
// grid-pattern
var gridPattern = svgdoc.createElementNS(svgns, 'pattern');
assignAttributes(gridPattern, {
'id': 'gridpattern',
'patternUnits': 'userSpaceOnUse',
'x': 0, //-(value.strokeWidth / 2), // position for strokewidth
'y': 0, //-(value.strokeWidth / 2), // position for strokewidth
'width': 100,
'height': 100
});
// grid-box
var gridBox = svgdoc.createElementNS(svgns, "rect");
assignAttributes(gridBox, {
'width': '100%',
'height': '100%',
'x': 0,
'y': 0,
'stroke-width': 0,
'stroke': 'none',
'fill': 'url(#gridpattern)',
'style': 'pointer-events: none; display:visible;'
});
$('#canvasGrid').append(gridBox);
// });
var gridimg = svgdoc.createElementNS(svgns, 'image');
assignAttributes(gridimg, {
'x': 0,
'y': 0,
'width': 100,
'height': 100
});
gridPattern.appendChild(gridimg);
$('#svgroot defs').append(gridPattern);
// grid-box
var gridBox = svgdoc.createElementNS(svgns, 'rect');
assignAttributes(gridBox, {
'width': '100%',
'height': '100%',
'x': 0,
'y': 0,
'stroke-width': 0,
'stroke': 'none',
'fill': 'url(#gridpattern)',
'style': 'pointer-events: none; display:visible;'
});
$('#canvasGrid').append(gridBox);
function updateGrid(zoom) {
// TODO: Try this with <line> elements, then compare performance difference
var bgwidth = +canvBG.attr('width');
var bgheight = +canvBG.attr('height');
var units = svgedit.units.getTypeMap();
var unit = units[svgEditor.curConfig.baseUnit]; // 1 = 1px
var r_intervals = [.01, .1, 1, 10, 100, 1000];
var d = 0;
var is_x = (d === 0);
var dim = is_x ? 'x' : 'y';
var lentype = is_x?'width':'height';
var c_elem = svgCanvas.getContentElem();
var content_d = c_elem.getAttribute(dim)-0;
var hcanv = hcanvas;
var u_multi = unit * zoom;
// Calculate the main number interval
var raw_m = 100 / u_multi;
var multi = 1;
for(var i = 0; i < r_intervals.length; i++) {
var num = r_intervals[i];
for(var i = 0; i < intervals.length; i++) {
var num = intervals[i];
multi = num;
if(raw_m <= num) {
break;
}
}
var big_int = multi * u_multi;
// Set the canvas size to the width of the container
hcanv.width = big_int;
hcanv.height = big_int;
var ctx = hcanv.getContext("2d");
var ruler_d = 0;
var cur_d = .5;
hcanvas.width = big_int;
hcanvas.height = big_int;
var ctx = hcanvas.getContext('2d');
var cur_d = 0.5;
var part = big_int / 10;
ctx.globalAlpha = 0.2;
ctx.strokeStyle = "#000";
for(var i = 1; i < 10; i++) {
var sub_d = Math.round(part * i) + .5;
// var line_num = (i % 2)?12:10;
ctx.strokeStyle = '#000';
for (var i = 1; i < 10; i++) {
var sub_d = Math.round(part * i) + 0.5;
// var line_num = (i % 2)?12:10;
var line_num = 0;
ctx.moveTo(sub_d, big_int);
ctx.lineTo(sub_d, line_num);
@@ -132,7 +107,7 @@ svgEditor.addExtension("view_grid", function(s) {
ctx.lineTo(line_num ,sub_d);
}
ctx.stroke();
ctx.beginPath();
ctx.beginPath();
ctx.globalAlpha = 0.5;
ctx.moveTo(cur_d, big_int);
ctx.lineTo(cur_d, 0);
@@ -141,7 +116,7 @@ svgEditor.addExtension("view_grid", function(s) {
ctx.lineTo(0, cur_d);
ctx.stroke();
var datauri = hcanv.toDataURL('image/png');
var datauri = hcanvas.toDataURL('image/png');
gridimg.setAttribute('width', big_int);
gridimg.setAttribute('height', big_int);
gridimg.parentNode.setAttribute('width', big_int);
@@ -149,36 +124,29 @@ svgEditor.addExtension("view_grid", function(s) {
svgCanvas.setHref(gridimg, datauri);
}
return {
name: "view_grid",
svgicons: "extensions/grid-icon.xml",
return {
name: 'view_grid',
svgicons: 'extensions/grid-icon.xml',
zoomChanged: function(zoom) {
// update size
if(showGrid) updateGrid(zoom);
},
zoomChanged: function(zoom) {
if(showGrid) updateGrid(zoom);
},
buttons: [{
id: "view_grid",
type: "context",
panel: "editor_panel",
title: "Show/Hide Grid",
events: {
'click': function() {
var gr = !$('#view_grid').hasClass('push_button_pressed');
if (gr) {
svgEditor.curConfig.showGrid = showGrid = true;
$('#view_grid').addClass('push_button_pressed').removeClass('tool_button');
$('#canvasGrid').attr('display', 'normal');
updateGrid(svgCanvas.getZoom());
}
else {
svgEditor.curConfig.showGrid = showGrid = false;
$('#view_grid').removeClass('push_button_pressed').addClass('tool_button');
$('#canvasGrid').attr('display', 'none');
}
}
}
}]
};
});
buttons: [{
id: 'view_grid',
type: 'context',
panel: 'editor_panel',
title: 'Show/Hide Grid',
events: {
click: function() {
svgEditor.curConfig.showGrid = showGrid = !showGrid;
if (showGrid) {
updateGrid(svgCanvas.getZoom());
}
$('#canvasGrid').toggle(showGrid);
$('#view_grid').toggleClass('push_button_pressed tool_button');
}
}
}]
};
});