ZenBrowserMirrors/pdf.js
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Implements vertical writing

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vyv03354 2013-02-08 21:29:22 +09:00
parent 4247339d28
commit c5b8ee6a91
9 changed files with 112 additions and 29 deletions
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56
src/canvas.js
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@ -896,6 +896,8 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var textSelection = textLayer && !skipTextSelection ? true : false;
var textRenderingMode = current.textRenderingMode;
var canvasWidth = 0.0;
var vertical = font.vertical;
var defaultVMetrics = font.defaultVMetrics;
// Type3 fonts - each glyph is a "mini-PDF"
if (font.coded) {
@ -969,25 +971,37 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
}
var character = glyph.fontChar;
var charWidth = glyph.width * fontSize * current.fontMatrix[0] +
var vmetric = glyph.vmetric || defaultVMetrics;
if (vertical) {
var vx = vmetric[1] * fontSize * current.fontMatrix[0];
var vy = vmetric[2] * fontSize * current.fontMatrix[0];
}
var width = vmetric ? -vmetric[0] : glyph.width;
var charWidth = width * fontSize * current.fontMatrix[0] +
charSpacing * current.fontDirection;
if (!glyph.disabled) {
var scaledX = x / fontSizeScale;
if (vertical) {
var scaledX = vx / fontSizeScale;
var scaledY = (x + vy) / fontSizeScale;
} else {
var scaledX = x / fontSizeScale;
var scaledY = 0;
}
switch (textRenderingMode) {
default: // other unsupported rendering modes
case TextRenderingMode.FILL:
case TextRenderingMode.FILL_ADD_TO_PATH:
ctx.fillText(character, scaledX, 0);
ctx.fillText(character, scaledX, scaledY);
break;
case TextRenderingMode.STROKE:
case TextRenderingMode.STROKE_ADD_TO_PATH:
ctx.strokeText(character, scaledX, 0);
ctx.strokeText(character, scaledX, scaledY);
break;
case TextRenderingMode.FILL_STROKE:
case TextRenderingMode.FILL_STROKE_ADD_TO_PATH:
ctx.fillText(character, scaledX, 0);
ctx.strokeText(character, scaledX, 0);
ctx.fillText(character, scaledX, scaledY);
ctx.strokeText(character, scaledX, scaledY);
break;
case TextRenderingMode.INVISIBLE:
case TextRenderingMode.ADD_TO_PATH:
@ -995,7 +1009,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
}
if (textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG) {
var clipCtx = this.getCurrentTextClipping();
clipCtx.fillText(character, scaledX, 0);
clipCtx.fillText(character, scaledX, scaledY);
}
}
@ -1003,12 +1017,23 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
canvasWidth += charWidth;
}
current.x += x * textHScale;
if (vertical) {
current.y -= x * textHScale;
} else {
current.x += x * textHScale;
}
ctx.restore();
}
if (textSelection) {
geom.canvasWidth = canvasWidth;
if (vertical) {
var vmetric = font.defaultVMetrics;
geom.x -= vmetric[1] * fontSize * current.fontMatrix[0] /
fontSizeScale * geom.hScale;
geom.y += vmetric[2] * fontSize * current.fontMatrix[0] /
fontSizeScale * geom.vScale;
}
this.textLayer.appendText(geom);
}
@ -1027,6 +1052,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var geom;
var canvasWidth = 0.0;
var textSelection = textLayer ? true : false;
var vertical = font.vertical;
if (textSelection) {
ctx.save();
@ -1039,7 +1065,11 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
var e = arr[i];
if (isNum(e)) {
var spacingLength = -e * fontSize * textHScale;
current.x += spacingLength;
if (vertical) {
current.y += spacingLength;
} else {
current.x += spacingLength;
}
if (textSelection)
canvasWidth += spacingLength;
@ -1055,6 +1085,14 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
if (textSelection) {
geom.canvasWidth = canvasWidth;
if (vertical) {
var fontSizeScale = current.fontSizeScale;
var vmetric = font.defaultVMetrics;
geom.x -= vmetric[1] * fontSize * current.fontMatrix[0] /
fontSizeScale * geom.hScale;
geom.y += vmetric[2] * fontSize * current.fontMatrix[0] /
fontSizeScale * geom.vScale;
}
this.textLayer.appendText(geom);
}
},