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from_html: Support of left, right, center, justify css text-align property #252

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Merged
merged 2 commits into from
May 11, 2014
Merged

from_html: Support of left, right, center, justify css text-align property #252

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bd9fd98
processing of css style text-align center and right added
woolfg Apr 29, 2014
8813035
prcoessing css style justify added
woolfg Apr 29, 2014
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74 changes: 69 additions & 5 deletions jspdf.plugin.from_html.js
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,11 @@
*/

(function(jsPDFAPI) {
var DrillForContent, FontNameDB, FontStyleMap, FontWeightMap, GetCSS, PurgeWhiteSpace, Renderer, ResolveFont, ResolveUnitedNumber, UnitedNumberMap, elementHandledElsewhere, images, loadImgs, process, tableToJson;
var clone,DrillForContent, FontNameDB, FontStyleMap, FontWeightMap, GetCSS, PurgeWhiteSpace, Renderer, ResolveFont, ResolveUnitedNumber, UnitedNumberMap, elementHandledElsewhere, images, loadImgs, process, tableToJson;
clone = (function(){
return function (obj) { Clone.prototype=obj; return new Clone() };
function Clone(){}
}());
PurgeWhiteSpace = function(array) {
var fragment, i, l, lTrimmed, r, rTrimmed, trailingSpace;
i = 0;
Expand Down Expand Up @@ -140,6 +144,7 @@
tmp = void 0;
css["font-family"] = ResolveFont(computedCSSElement("font-family")) || "times";
css["font-style"] = FontStyleMap[computedCSSElement("font-style")] || "normal";
css["text-align"] = TextAlignMap[computedCSSElement("text-align")] || "left";
tmp = FontWeightMap[computedCSSElement("font-weight")] || "normal";
if (tmp === "bold") {
if (css["font-style"] === "normal") {
Expand Down Expand Up @@ -399,8 +404,36 @@
}
}
}

//if text alignment was set, set margin/indent of each line
if (style['text-align'] !== undefined && (style['text-align'] === 'center' || style['text-align'] === 'right' || style['text-align'] === 'justify')) {
for(var i = 0; i < lines.length; ++i) {
var length = this.pdf.getStringUnitWidth(lines[i][0][0], fragmentSpecificMetrics) * fragmentSpecificMetrics.fontSize / k;
//if there is more than on line we have to clone the style object as all lines hold a reference on this object
if (i > 0) {
lines[i][0][1] = clone(lines[i][0][1]);
}
var space = (maxLineLength-length);

if (style['text-align'] === 'right') {
lines[i][0][1]['margin-left'] = space;
//if alignment is not right, it has to be center so split the space to the left and the right
} else if (style['text-align'] === 'center') {
lines[i][0][1]['margin-left'] = space/2;
//if justify was set, calculate the word spacing and define in by using the css property
} else if (style['text-align'] === 'justify') {
var countSpaces = lines[i][0][0].split(' ').length-1;
lines[i][0][1]['word-spacing'] = space/countSpaces;
//ignore the last line in justify mode
if (i === (lines.length-1)) {
lines[i][0][1]['word-spacing'] = 0;
}
}
}
}

return lines;
};
};
Renderer.prototype.RenderTextFragment = function(text, style) {
var defaultFontSize, font;
if (this.pdf.internal.pageSize.height - this.pdf.margins_doc.bottom < this.y + this.pdf.internal.getFontSize()) {
Expand All @@ -411,7 +444,19 @@
}
defaultFontSize = 12;
font = this.pdf.internal.getFont(style["font-family"], style["font-style"]);
return this.pdf.internal.write("/" + font.id, (defaultFontSize * style["font-size"]).toFixed(2), "Tf", "(" + this.pdf.internal.pdfEscape(text) + ") Tj");

//set the word spacing for e.g. justify style
if (style['word-spacing'] !== undefined && style['word-spacing'] > 0) {
this.pdf.internal.write(style['word-spacing'].toFixed(2), "Tw");
}

this.pdf.internal.write("/" + font.id, (defaultFontSize * style["font-size"]).toFixed(2), "Tf", "(" + this.pdf.internal.pdfEscape(text) + ") Tj");

//set the word spacing back to neutral => 0
if (style['word-spacing'] !== undefined) {
this.pdf.internal.write(0, "Tw");
}

};
Renderer.prototype.renderParagraph = function() {
var blockstyle, defaultFontSize, fontToUnitRatio, fragments, i, l, line, lines, maxLineHeight, out, paragraphspacing_after, paragraphspacing_before, priorblockstype, styles;
Expand Down Expand Up @@ -440,7 +485,11 @@
l = void 0;
this.y += paragraphspacing_before;
out("q", "BT", this.pdf.internal.getCoordinateString(this.x), this.pdf.internal.getVerticalCoordinateString(this.y), "Td");
while (lines.length) {

//stores the current indent of cursor position
var currentIndent = 0;

while (lines.length) {
line = lines.shift();
maxLineHeight = 0;
i = 0;
Expand All @@ -451,7 +500,16 @@
}
i++;
}
out(0, (-1 * defaultFontSize * maxLineHeight).toFixed(2), "Td");
//if we have to move the cursor to adapt the indent
var indentMove = 0;
//if a margin was added (by e.g. a text-alignment), move the cursor
if (line[0][1]["margin-left"] !== undefined && line[0][1]["margin-left"] > 0) {
wantedIndent = this.pdf.internal.getCoordinateString(line[0][1]["margin-left"]);
indentMove = wantedIndent-currentIndent;
currentIndent = wantedIndent;
}
//move the cursor
out(indentMove, (-1 * defaultFontSize * maxLineHeight).toFixed(2), "Td");
i = 0;
l = line.length;
while (i !== l) {
Expand Down Expand Up @@ -504,6 +562,12 @@
italic: "italic",
oblique: "italic"
};
TextAlignMap = {
left: "left",
right: "right",
center: "center",
justify: "justify"
};
UnitedNumberMap = {
normal: 1
/*
Expand Down