Merge pull request #13300 from Snuffleupagus/canvas-class
Convert the code in `src/display/canvas.js` to use standard classes
This commit is contained in:
Tim van der Meij
GitHub
commit
ca668587c6
@ -51,7 +51,9 @@ const LINEWIDTH_SCALE_FACTOR = 1.000001;
|
||||
|
||||
function addContextCurrentTransform(ctx) {
|
||||
// If the context doesn't expose a `mozCurrentTransform`, add a JS based one.
|
||||
if (!ctx.mozCurrentTransform) {
|
||||
if (ctx.mozCurrentTransform) {
|
||||
return;
|
||||
}
|
||||
ctx._originalSave = ctx.save;
|
||||
ctx._originalRestore = ctx.restore;
|
||||
ctx._originalRotate = ctx.rotate;
|
||||
@ -98,14 +100,7 @@ function addContextCurrentTransform(ctx) {
|
||||
// http://www.wolframalpha.com/input/?
|
||||
// i=Inverse+{{a%2C+c%2C+e}%2C+{b%2C+d%2C+f}%2C+{0%2C+0%2C+1}}
|
||||
|
||||
const m = this._transformMatrix;
|
||||
const a = m[0],
|
||||
b = m[1],
|
||||
c = m[2],
|
||||
d = m[3],
|
||||
e = m[4],
|
||||
f = m[5];
|
||||
|
||||
const [a, b, c, d, e, f] = this._transformMatrix;
|
||||
const ad_bc = a * d - b * c;
|
||||
const bc_ad = b * c - a * d;
|
||||
|
||||
@ -197,21 +192,14 @@ function addContextCurrentTransform(ctx) {
|
||||
this._originalRotate(angle);
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
const CachedCanvases = (function CachedCanvasesClosure() {
|
||||
// eslint-disable-next-line no-shadow
|
||||
function CachedCanvases(canvasFactory) {
|
||||
class CachedCanvases {
|
||||
constructor(canvasFactory) {
|
||||
this.canvasFactory = canvasFactory;
|
||||
this.cache = Object.create(null);
|
||||
}
|
||||
CachedCanvases.prototype = {
|
||||
getCanvas: function CachedCanvases_getCanvas(
|
||||
id,
|
||||
width,
|
||||
height,
|
||||
trackTransform
|
||||
) {
|
||||
|
||||
getCanvas(id, width, height, trackTransform) {
|
||||
let canvasEntry;
|
||||
if (this.cache[id] !== undefined) {
|
||||
canvasEntry = this.cache[id];
|
||||
@ -226,17 +214,16 @@ const CachedCanvases = (function CachedCanvasesClosure() {
|
||||
addContextCurrentTransform(canvasEntry.context);
|
||||
}
|
||||
return canvasEntry;
|
||||
},
|
||||
}
|
||||
|
||||
clear() {
|
||||
for (const id in this.cache) {
|
||||
const canvasEntry = this.cache[id];
|
||||
this.canvasFactory.destroy(canvasEntry);
|
||||
delete this.cache[id];
|
||||
}
|
||||
},
|
||||
};
|
||||
return CachedCanvases;
|
||||
})();
|
||||
}
|
||||
}
|
||||
|
||||
function compileType3Glyph(imgData) {
|
||||
const POINT_TO_PROCESS_LIMIT = 1000;
|
||||
@ -411,9 +398,8 @@ function compileType3Glyph(imgData) {
|
||||
return drawOutline;
|
||||
}
|
||||
|
||||
const CanvasExtraState = (function CanvasExtraStateClosure() {
|
||||
// eslint-disable-next-line no-shadow
|
||||
function CanvasExtraState() {
|
||||
class CanvasExtraState {
|
||||
constructor() {
|
||||
// Are soft masks and alpha values shapes or opacities?
|
||||
this.alphaIsShape = false;
|
||||
this.fontSize = 0;
|
||||
@ -447,17 +433,15 @@ const CanvasExtraState = (function CanvasExtraStateClosure() {
|
||||
this.transferMaps = null;
|
||||
}
|
||||
|
||||
CanvasExtraState.prototype = {
|
||||
clone: function CanvasExtraState_clone() {
|
||||
clone() {
|
||||
return Object.create(this);
|
||||
},
|
||||
setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
|
||||
}
|
||||
|
||||
setCurrentPoint(x, y) {
|
||||
this.x = x;
|
||||
this.y = y;
|
||||
},
|
||||
};
|
||||
return CanvasExtraState;
|
||||
})();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @type {any}
|
||||
@ -469,50 +453,6 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
// Defines the number of steps before checking the execution time
|
||||
const EXECUTION_STEPS = 10;
|
||||
|
||||
// eslint-disable-next-line no-shadow
|
||||
function CanvasGraphics(
|
||||
canvasCtx,
|
||||
commonObjs,
|
||||
objs,
|
||||
canvasFactory,
|
||||
webGLContext,
|
||||
imageLayer,
|
||||
optionalContentConfig
|
||||
) {
|
||||
this.ctx = canvasCtx;
|
||||
this.current = new CanvasExtraState();
|
||||
this.stateStack = [];
|
||||
this.pendingClip = null;
|
||||
this.pendingEOFill = false;
|
||||
this.res = null;
|
||||
this.xobjs = null;
|
||||
this.commonObjs = commonObjs;
|
||||
this.objs = objs;
|
||||
this.canvasFactory = canvasFactory;
|
||||
this.webGLContext = webGLContext;
|
||||
this.imageLayer = imageLayer;
|
||||
this.groupStack = [];
|
||||
this.processingType3 = null;
|
||||
// Patterns are painted relative to the initial page/form transform, see pdf
|
||||
// spec 8.7.2 NOTE 1.
|
||||
this.baseTransform = null;
|
||||
this.baseTransformStack = [];
|
||||
this.groupLevel = 0;
|
||||
this.smaskStack = [];
|
||||
this.smaskCounter = 0;
|
||||
this.tempSMask = null;
|
||||
this.contentVisible = true;
|
||||
this.markedContentStack = [];
|
||||
this.optionalContentConfig = optionalContentConfig;
|
||||
this.cachedCanvases = new CachedCanvases(this.canvasFactory);
|
||||
if (canvasCtx) {
|
||||
// NOTE: if mozCurrentTransform is polyfilled, then the current state of
|
||||
// the transformation must already be set in canvasCtx._transformMatrix.
|
||||
addContextCurrentTransform(canvasCtx);
|
||||
}
|
||||
this._cachedGetSinglePixelWidth = null;
|
||||
}
|
||||
|
||||
function putBinaryImageData(ctx, imgData, transferMaps = null) {
|
||||
if (typeof ImageData !== "undefined" && imgData instanceof ImageData) {
|
||||
ctx.putImageData(imgData, 0, 0);
|
||||
@ -912,7 +852,51 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
const NORMAL_CLIP = {};
|
||||
const EO_CLIP = {};
|
||||
|
||||
CanvasGraphics.prototype = {
|
||||
// eslint-disable-next-line no-shadow
|
||||
class CanvasGraphics {
|
||||
constructor(
|
||||
canvasCtx,
|
||||
commonObjs,
|
||||
objs,
|
||||
canvasFactory,
|
||||
webGLContext,
|
||||
imageLayer,
|
||||
optionalContentConfig
|
||||
) {
|
||||
this.ctx = canvasCtx;
|
||||
this.current = new CanvasExtraState();
|
||||
this.stateStack = [];
|
||||
this.pendingClip = null;
|
||||
this.pendingEOFill = false;
|
||||
this.res = null;
|
||||
this.xobjs = null;
|
||||
this.commonObjs = commonObjs;
|
||||
this.objs = objs;
|
||||
this.canvasFactory = canvasFactory;
|
||||
this.webGLContext = webGLContext;
|
||||
this.imageLayer = imageLayer;
|
||||
this.groupStack = [];
|
||||
this.processingType3 = null;
|
||||
// Patterns are painted relative to the initial page/form transform, see
|
||||
// PDF spec 8.7.2 NOTE 1.
|
||||
this.baseTransform = null;
|
||||
this.baseTransformStack = [];
|
||||
this.groupLevel = 0;
|
||||
this.smaskStack = [];
|
||||
this.smaskCounter = 0;
|
||||
this.tempSMask = null;
|
||||
this.contentVisible = true;
|
||||
this.markedContentStack = [];
|
||||
this.optionalContentConfig = optionalContentConfig;
|
||||
this.cachedCanvases = new CachedCanvases(this.canvasFactory);
|
||||
if (canvasCtx) {
|
||||
// NOTE: if mozCurrentTransform is polyfilled, then the current state of
|
||||
// the transformation must already be set in canvasCtx._transformMatrix.
|
||||
addContextCurrentTransform(canvasCtx);
|
||||
}
|
||||
this._cachedGetSinglePixelWidth = null;
|
||||
}
|
||||
|
||||
beginDrawing({
|
||||
transform,
|
||||
viewport,
|
||||
@ -967,9 +951,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
if (this.imageLayer) {
|
||||
this.imageLayer.beginLayout();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
executeOperatorList: function CanvasGraphics_executeOperatorList(
|
||||
executeOperatorList(
|
||||
operatorList,
|
||||
executionStartIdx,
|
||||
continueCallback,
|
||||
@ -1038,9 +1022,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
// If the operatorList isn't executed completely yet OR the execution
|
||||
// time was short enough, do another execution round.
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
endDrawing: function CanvasGraphics_endDrawing() {
|
||||
endDrawing() {
|
||||
// Finishing all opened operations such as SMask group painting.
|
||||
while (this.stateStack.length || this.current.activeSMask !== null) {
|
||||
this.restore();
|
||||
@ -1063,36 +1047,43 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
if (this.imageLayer) {
|
||||
this.imageLayer.endLayout();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
// Graphics state
|
||||
setLineWidth: function CanvasGraphics_setLineWidth(width) {
|
||||
setLineWidth(width) {
|
||||
this.current.lineWidth = width;
|
||||
this.ctx.lineWidth = width;
|
||||
},
|
||||
setLineCap: function CanvasGraphics_setLineCap(style) {
|
||||
}
|
||||
|
||||
setLineCap(style) {
|
||||
this.ctx.lineCap = LINE_CAP_STYLES[style];
|
||||
},
|
||||
setLineJoin: function CanvasGraphics_setLineJoin(style) {
|
||||
}
|
||||
|
||||
setLineJoin(style) {
|
||||
this.ctx.lineJoin = LINE_JOIN_STYLES[style];
|
||||
},
|
||||
setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
|
||||
}
|
||||
|
||||
setMiterLimit(limit) {
|
||||
this.ctx.miterLimit = limit;
|
||||
},
|
||||
setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
|
||||
}
|
||||
|
||||
setDash(dashArray, dashPhase) {
|
||||
const ctx = this.ctx;
|
||||
if (ctx.setLineDash !== undefined) {
|
||||
ctx.setLineDash(dashArray);
|
||||
ctx.lineDashOffset = dashPhase;
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
setRenderingIntent(intent) {
|
||||
// This operation is ignored since we haven't found a use case for it yet.
|
||||
},
|
||||
}
|
||||
|
||||
setFlatness(flatness) {
|
||||
// This operation is ignored since we haven't found a use case for it yet.
|
||||
},
|
||||
setGState: function CanvasGraphics_setGState(states) {
|
||||
}
|
||||
|
||||
setGState(states) {
|
||||
for (let i = 0, ii = states.length; i < ii; i++) {
|
||||
const state = states[i];
|
||||
const key = state[0];
|
||||
@ -1158,8 +1149,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.current.transferMaps = value;
|
||||
}
|
||||
}
|
||||
},
|
||||
beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
|
||||
}
|
||||
|
||||
beginSMaskGroup() {
|
||||
const activeSMask = this.current.activeSMask;
|
||||
const drawnWidth = activeSMask.canvas.width;
|
||||
const drawnHeight = activeSMask.canvas.height;
|
||||
@ -1191,8 +1183,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
]);
|
||||
this.groupStack.push(currentCtx);
|
||||
this.groupLevel++;
|
||||
},
|
||||
suspendSMaskGroup: function CanvasGraphics_endSMaskGroup() {
|
||||
}
|
||||
|
||||
suspendSMaskGroup() {
|
||||
// Similar to endSMaskGroup, the intermediate canvas has to be composed
|
||||
// and future ctx state restored.
|
||||
const groupCtx = this.ctx;
|
||||
@ -1224,8 +1217,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
groupCtx.setTransform(1, 0, 0, 1, 0, 0);
|
||||
groupCtx.clearRect(0, 0, groupCtx.canvas.width, groupCtx.canvas.height);
|
||||
groupCtx.restore();
|
||||
},
|
||||
resumeSMaskGroup: function CanvasGraphics_resumeSMaskGroup() {
|
||||
}
|
||||
|
||||
resumeSMaskGroup() {
|
||||
// Resuming state saved by suspendSMaskGroup. We don't need to restore
|
||||
// any groupCtx state since restore() command (the only caller) will do
|
||||
// that for us. See also beginSMaskGroup.
|
||||
@ -1234,8 +1228,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.ctx = groupCtx;
|
||||
this.groupStack.push(currentCtx);
|
||||
this.groupLevel++;
|
||||
},
|
||||
endSMaskGroup: function CanvasGraphics_endSMaskGroup() {
|
||||
}
|
||||
|
||||
endSMaskGroup() {
|
||||
const groupCtx = this.ctx;
|
||||
this.groupLevel--;
|
||||
this.ctx = this.groupStack.pop();
|
||||
@ -1255,15 +1250,17 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
groupCtx.mozCurrentTransform
|
||||
);
|
||||
this.ctx.transform.apply(this.ctx, deltaTransform);
|
||||
},
|
||||
save: function CanvasGraphics_save() {
|
||||
}
|
||||
|
||||
save() {
|
||||
this.ctx.save();
|
||||
const old = this.current;
|
||||
this.stateStack.push(old);
|
||||
this.current = old.clone();
|
||||
this.current.resumeSMaskCtx = null;
|
||||
},
|
||||
restore: function CanvasGraphics_restore() {
|
||||
}
|
||||
|
||||
restore() {
|
||||
// SMask was suspended, we just need to resume it.
|
||||
if (this.current.resumeSMaskCtx) {
|
||||
this.resumeSMaskGroup();
|
||||
@ -1291,15 +1288,16 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
// We've finished all the SMask groups, reflect that in our state.
|
||||
this.current.activeSMask = null;
|
||||
}
|
||||
},
|
||||
transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
|
||||
}
|
||||
|
||||
transform(a, b, c, d, e, f) {
|
||||
this.ctx.transform(a, b, c, d, e, f);
|
||||
|
||||
this._cachedGetSinglePixelWidth = null;
|
||||
},
|
||||
}
|
||||
|
||||
// Path
|
||||
constructPath: function CanvasGraphics_constructPath(ops, args) {
|
||||
constructPath(ops, args) {
|
||||
const ctx = this.ctx;
|
||||
const current = this.current;
|
||||
let x = current.x,
|
||||
@ -1373,11 +1371,13 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
}
|
||||
current.setCurrentPoint(x, y);
|
||||
},
|
||||
closePath: function CanvasGraphics_closePath() {
|
||||
}
|
||||
|
||||
closePath() {
|
||||
this.ctx.closePath();
|
||||
},
|
||||
stroke: function CanvasGraphics_stroke(consumePath) {
|
||||
}
|
||||
|
||||
stroke(consumePath) {
|
||||
consumePath = typeof consumePath !== "undefined" ? consumePath : true;
|
||||
const ctx = this.ctx;
|
||||
const strokeColor = this.current.strokeColor;
|
||||
@ -1428,12 +1428,14 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
// Restore the global alpha to the fill alpha
|
||||
ctx.globalAlpha = this.current.fillAlpha;
|
||||
},
|
||||
closeStroke: function CanvasGraphics_closeStroke() {
|
||||
}
|
||||
|
||||
closeStroke() {
|
||||
this.closePath();
|
||||
this.stroke();
|
||||
},
|
||||
fill: function CanvasGraphics_fill(consumePath) {
|
||||
}
|
||||
|
||||
fill(consumePath) {
|
||||
consumePath = typeof consumePath !== "undefined" ? consumePath : true;
|
||||
const ctx = this.ctx;
|
||||
const fillColor = this.current.fillColor;
|
||||
@ -1464,50 +1466,58 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
if (consumePath) {
|
||||
this.consumePath();
|
||||
}
|
||||
},
|
||||
eoFill: function CanvasGraphics_eoFill() {
|
||||
}
|
||||
|
||||
eoFill() {
|
||||
this.pendingEOFill = true;
|
||||
this.fill();
|
||||
},
|
||||
fillStroke: function CanvasGraphics_fillStroke() {
|
||||
}
|
||||
|
||||
fillStroke() {
|
||||
this.fill(false);
|
||||
this.stroke(false);
|
||||
|
||||
this.consumePath();
|
||||
},
|
||||
eoFillStroke: function CanvasGraphics_eoFillStroke() {
|
||||
}
|
||||
|
||||
eoFillStroke() {
|
||||
this.pendingEOFill = true;
|
||||
this.fillStroke();
|
||||
},
|
||||
closeFillStroke: function CanvasGraphics_closeFillStroke() {
|
||||
}
|
||||
|
||||
closeFillStroke() {
|
||||
this.closePath();
|
||||
this.fillStroke();
|
||||
},
|
||||
closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
|
||||
}
|
||||
|
||||
closeEOFillStroke() {
|
||||
this.pendingEOFill = true;
|
||||
this.closePath();
|
||||
this.fillStroke();
|
||||
},
|
||||
endPath: function CanvasGraphics_endPath() {
|
||||
}
|
||||
|
||||
endPath() {
|
||||
this.consumePath();
|
||||
},
|
||||
}
|
||||
|
||||
// Clipping
|
||||
clip: function CanvasGraphics_clip() {
|
||||
clip() {
|
||||
this.pendingClip = NORMAL_CLIP;
|
||||
},
|
||||
eoClip: function CanvasGraphics_eoClip() {
|
||||
}
|
||||
|
||||
eoClip() {
|
||||
this.pendingClip = EO_CLIP;
|
||||
},
|
||||
}
|
||||
|
||||
// Text
|
||||
beginText: function CanvasGraphics_beginText() {
|
||||
beginText() {
|
||||
this.current.textMatrix = IDENTITY_MATRIX;
|
||||
this.current.textMatrixScale = 1;
|
||||
this.current.x = this.current.lineX = 0;
|
||||
this.current.y = this.current.lineY = 0;
|
||||
},
|
||||
endText: function CanvasGraphics_endText() {
|
||||
}
|
||||
|
||||
endText() {
|
||||
const paths = this.pendingTextPaths;
|
||||
const ctx = this.ctx;
|
||||
if (paths === undefined) {
|
||||
@ -1527,20 +1537,25 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
ctx.clip();
|
||||
ctx.beginPath();
|
||||
delete this.pendingTextPaths;
|
||||
},
|
||||
setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
|
||||
}
|
||||
|
||||
setCharSpacing(spacing) {
|
||||
this.current.charSpacing = spacing;
|
||||
},
|
||||
setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
|
||||
}
|
||||
|
||||
setWordSpacing(spacing) {
|
||||
this.current.wordSpacing = spacing;
|
||||
},
|
||||
setHScale: function CanvasGraphics_setHScale(scale) {
|
||||
}
|
||||
|
||||
setHScale(scale) {
|
||||
this.current.textHScale = scale / 100;
|
||||
},
|
||||
setLeading: function CanvasGraphics_setLeading(leading) {
|
||||
}
|
||||
|
||||
setLeading(leading) {
|
||||
this.current.leading = -leading;
|
||||
},
|
||||
setFont: function CanvasGraphics_setFont(fontRefName, size) {
|
||||
}
|
||||
|
||||
setFont(fontRefName, size) {
|
||||
const fontObj = this.commonObjs.get(fontRefName);
|
||||
const current = this.current;
|
||||
|
||||
@ -1595,31 +1610,37 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.current.fontSizeScale = size / browserFontSize;
|
||||
|
||||
this.ctx.font = `${italic} ${bold} ${browserFontSize}px ${typeface}`;
|
||||
},
|
||||
setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
|
||||
}
|
||||
|
||||
setTextRenderingMode(mode) {
|
||||
this.current.textRenderingMode = mode;
|
||||
},
|
||||
setTextRise: function CanvasGraphics_setTextRise(rise) {
|
||||
}
|
||||
|
||||
setTextRise(rise) {
|
||||
this.current.textRise = rise;
|
||||
},
|
||||
moveText: function CanvasGraphics_moveText(x, y) {
|
||||
}
|
||||
|
||||
moveText(x, y) {
|
||||
this.current.x = this.current.lineX += x;
|
||||
this.current.y = this.current.lineY += y;
|
||||
},
|
||||
setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
|
||||
}
|
||||
|
||||
setLeadingMoveText(x, y) {
|
||||
this.setLeading(-y);
|
||||
this.moveText(x, y);
|
||||
},
|
||||
setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
|
||||
}
|
||||
|
||||
setTextMatrix(a, b, c, d, e, f) {
|
||||
this.current.textMatrix = [a, b, c, d, e, f];
|
||||
this.current.textMatrixScale = Math.hypot(a, b);
|
||||
|
||||
this.current.x = this.current.lineX = 0;
|
||||
this.current.y = this.current.lineY = 0;
|
||||
},
|
||||
nextLine: function CanvasGraphics_nextLine() {
|
||||
}
|
||||
|
||||
nextLine() {
|
||||
this.moveText(0, this.current.leading);
|
||||
},
|
||||
}
|
||||
|
||||
paintChar(character, x, y, patternTransform, resetLineWidthToOne) {
|
||||
const ctx = this.ctx;
|
||||
@ -1698,7 +1719,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
addToPath,
|
||||
});
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
get isFontSubpixelAAEnabled() {
|
||||
// Checks if anti-aliasing is enabled when scaled text is painted.
|
||||
@ -1719,9 +1740,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
}
|
||||
return shadow(this, "isFontSubpixelAAEnabled", enabled);
|
||||
},
|
||||
}
|
||||
|
||||
showText: function CanvasGraphics_showText(glyphs) {
|
||||
showText(glyphs) {
|
||||
const current = this.current;
|
||||
const font = current.font;
|
||||
if (font.isType3Font) {
|
||||
@ -1891,9 +1912,10 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
current.x += x * textHScale;
|
||||
}
|
||||
ctx.restore();
|
||||
},
|
||||
return undefined;
|
||||
}
|
||||
|
||||
showType3Text: function CanvasGraphics_showType3Text(glyphs) {
|
||||
showType3Text(glyphs) {
|
||||
// Type3 fonts - each glyph is a "mini-PDF"
|
||||
const ctx = this.ctx;
|
||||
const current = this.current;
|
||||
@ -1953,30 +1975,24 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
ctx.restore();
|
||||
this.processingType3 = null;
|
||||
},
|
||||
}
|
||||
|
||||
// Type3 fonts
|
||||
setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {
|
||||
setCharWidth(xWidth, yWidth) {
|
||||
// We can safely ignore this since the width should be the same
|
||||
// as the width in the Widths array.
|
||||
},
|
||||
setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(
|
||||
xWidth,
|
||||
yWidth,
|
||||
llx,
|
||||
lly,
|
||||
urx,
|
||||
ury
|
||||
) {
|
||||
}
|
||||
|
||||
setCharWidthAndBounds(xWidth, yWidth, llx, lly, urx, ury) {
|
||||
// TODO According to the spec we're also suppose to ignore any operators
|
||||
// that set color or include images while processing this type3 font.
|
||||
this.ctx.rect(llx, lly, urx - llx, ury - lly);
|
||||
this.clip();
|
||||
this.endPath();
|
||||
},
|
||||
}
|
||||
|
||||
// Color
|
||||
getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
|
||||
getColorN_Pattern(IR) {
|
||||
let pattern;
|
||||
if (IR[0] === "TilingPattern") {
|
||||
const color = IR[1];
|
||||
@ -2004,27 +2020,31 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
pattern = getShadingPatternFromIR(IR);
|
||||
}
|
||||
return pattern;
|
||||
},
|
||||
setStrokeColorN: function CanvasGraphics_setStrokeColorN() {
|
||||
}
|
||||
|
||||
setStrokeColorN() {
|
||||
this.current.strokeColor = this.getColorN_Pattern(arguments);
|
||||
},
|
||||
setFillColorN: function CanvasGraphics_setFillColorN() {
|
||||
}
|
||||
|
||||
setFillColorN() {
|
||||
this.current.fillColor = this.getColorN_Pattern(arguments);
|
||||
this.current.patternFill = true;
|
||||
},
|
||||
setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
|
||||
}
|
||||
|
||||
setStrokeRGBColor(r, g, b) {
|
||||
const color = Util.makeHexColor(r, g, b);
|
||||
this.ctx.strokeStyle = color;
|
||||
this.current.strokeColor = color;
|
||||
},
|
||||
setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
|
||||
}
|
||||
|
||||
setFillRGBColor(r, g, b) {
|
||||
const color = Util.makeHexColor(r, g, b);
|
||||
this.ctx.fillStyle = color;
|
||||
this.current.fillColor = color;
|
||||
this.current.patternFill = false;
|
||||
},
|
||||
}
|
||||
|
||||
shadingFill: function CanvasGraphics_shadingFill(patternIR) {
|
||||
shadingFill(patternIR) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2062,20 +2082,18 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
|
||||
this.restore();
|
||||
},
|
||||
}
|
||||
|
||||
// Images
|
||||
beginInlineImage: function CanvasGraphics_beginInlineImage() {
|
||||
beginInlineImage() {
|
||||
unreachable("Should not call beginInlineImage");
|
||||
},
|
||||
beginImageData: function CanvasGraphics_beginImageData() {
|
||||
unreachable("Should not call beginImageData");
|
||||
},
|
||||
}
|
||||
|
||||
paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(
|
||||
matrix,
|
||||
bbox
|
||||
) {
|
||||
beginImageData() {
|
||||
unreachable("Should not call beginImageData");
|
||||
}
|
||||
|
||||
paintFormXObjectBegin(matrix, bbox) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2095,17 +2113,17 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.clip();
|
||||
this.endPath();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
|
||||
paintFormXObjectEnd() {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
this.restore();
|
||||
this.baseTransform = this.baseTransformStack.pop();
|
||||
},
|
||||
}
|
||||
|
||||
beginGroup: function CanvasGraphics_beginGroup(group) {
|
||||
beginGroup(group) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2228,9 +2246,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
|
||||
// Resetting mask state, masks will be applied on restore of the group.
|
||||
this.current.activeSMask = null;
|
||||
},
|
||||
}
|
||||
|
||||
endGroup: function CanvasGraphics_endGroup(group) {
|
||||
endGroup(group) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2250,24 +2268,20 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.ctx.drawImage(groupCtx.canvas, 0, 0);
|
||||
}
|
||||
this.restore();
|
||||
},
|
||||
}
|
||||
|
||||
beginAnnotations: function CanvasGraphics_beginAnnotations() {
|
||||
beginAnnotations() {
|
||||
this.save();
|
||||
if (this.baseTransform) {
|
||||
this.ctx.setTransform.apply(this.ctx, this.baseTransform);
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
endAnnotations: function CanvasGraphics_endAnnotations() {
|
||||
endAnnotations() {
|
||||
this.restore();
|
||||
},
|
||||
}
|
||||
|
||||
beginAnnotation: function CanvasGraphics_beginAnnotation(
|
||||
rect,
|
||||
transform,
|
||||
matrix
|
||||
) {
|
||||
beginAnnotation(rect, transform, matrix) {
|
||||
this.save();
|
||||
resetCtxToDefault(this.ctx);
|
||||
this.current = new CanvasExtraState();
|
||||
@ -2282,13 +2296,13 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
|
||||
this.transform.apply(this, transform);
|
||||
this.transform.apply(this, matrix);
|
||||
},
|
||||
}
|
||||
|
||||
endAnnotation: function CanvasGraphics_endAnnotation() {
|
||||
endAnnotation() {
|
||||
this.restore();
|
||||
},
|
||||
}
|
||||
|
||||
paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
|
||||
paintImageMaskXObject(img) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2333,7 +2347,7 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
maskCtx.restore();
|
||||
|
||||
this.paintInlineImageXObject(maskCanvas.canvas);
|
||||
},
|
||||
}
|
||||
|
||||
paintImageMaskXObjectRepeat(
|
||||
imgData,
|
||||
@ -2385,11 +2399,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1);
|
||||
ctx.restore();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
paintImageMaskXObjectGroup: function CanvasGraphics_paintImageMaskXObjectGroup(
|
||||
images
|
||||
) {
|
||||
paintImageMaskXObjectGroup(images) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2427,9 +2439,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1);
|
||||
ctx.restore();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
|
||||
paintImageXObject(objId) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2442,14 +2454,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
|
||||
this.paintInlineImageXObject(imgData);
|
||||
},
|
||||
}
|
||||
|
||||
paintImageXObjectRepeat: function CanvasGraphics_paintImageXObjectRepeat(
|
||||
objId,
|
||||
scaleX,
|
||||
scaleY,
|
||||
positions
|
||||
) {
|
||||
paintImageXObjectRepeat(objId, scaleX, scaleY, positions) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2474,11 +2481,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
});
|
||||
}
|
||||
this.paintInlineImageXObjectGroup(imgData, map);
|
||||
},
|
||||
}
|
||||
|
||||
paintInlineImageXObject: function CanvasGraphics_paintInlineImageXObject(
|
||||
imgData
|
||||
) {
|
||||
paintInlineImageXObject(imgData) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2580,12 +2585,9 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
});
|
||||
}
|
||||
this.restore();
|
||||
},
|
||||
}
|
||||
|
||||
paintInlineImageXObjectGroup: function CanvasGraphics_paintInlineImageXObjectGroup(
|
||||
imgData,
|
||||
map
|
||||
) {
|
||||
paintInlineImageXObjectGroup(imgData, map) {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
@ -2625,32 +2627,32 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
ctx.restore();
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
paintSolidColorImageMask: function CanvasGraphics_paintSolidColorImageMask() {
|
||||
paintSolidColorImageMask() {
|
||||
if (!this.contentVisible) {
|
||||
return;
|
||||
}
|
||||
this.ctx.fillRect(0, 0, 1, 1);
|
||||
},
|
||||
}
|
||||
|
||||
// Marked content
|
||||
|
||||
markPoint: function CanvasGraphics_markPoint(tag) {
|
||||
markPoint(tag) {
|
||||
// TODO Marked content.
|
||||
},
|
||||
markPointProps: function CanvasGraphics_markPointProps(tag, properties) {
|
||||
}
|
||||
|
||||
markPointProps(tag, properties) {
|
||||
// TODO Marked content.
|
||||
},
|
||||
beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {
|
||||
}
|
||||
|
||||
beginMarkedContent(tag) {
|
||||
this.markedContentStack.push({
|
||||
visible: true,
|
||||
});
|
||||
},
|
||||
beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(
|
||||
tag,
|
||||
properties
|
||||
) {
|
||||
}
|
||||
|
||||
beginMarkedContentProps(tag, properties) {
|
||||
if (tag === "OC") {
|
||||
this.markedContentStack.push({
|
||||
visible: this.optionalContentConfig.isVisible(properties),
|
||||
@ -2661,24 +2663,26 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
});
|
||||
}
|
||||
this.contentVisible = this.isContentVisible();
|
||||
},
|
||||
endMarkedContent: function CanvasGraphics_endMarkedContent() {
|
||||
}
|
||||
|
||||
endMarkedContent() {
|
||||
this.markedContentStack.pop();
|
||||
this.contentVisible = this.isContentVisible();
|
||||
},
|
||||
}
|
||||
|
||||
// Compatibility
|
||||
|
||||
beginCompat: function CanvasGraphics_beginCompat() {
|
||||
beginCompat() {
|
||||
// TODO ignore undefined operators (should we do that anyway?)
|
||||
},
|
||||
endCompat: function CanvasGraphics_endCompat() {
|
||||
}
|
||||
|
||||
endCompat() {
|
||||
// TODO stop ignoring undefined operators
|
||||
},
|
||||
}
|
||||
|
||||
// Helper functions
|
||||
|
||||
consumePath: function CanvasGraphics_consumePath() {
|
||||
consumePath() {
|
||||
const ctx = this.ctx;
|
||||
if (this.pendingClip) {
|
||||
if (this.pendingClip === EO_CLIP) {
|
||||
@ -2689,7 +2693,8 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
this.pendingClip = null;
|
||||
}
|
||||
ctx.beginPath();
|
||||
},
|
||||
}
|
||||
|
||||
getSinglePixelWidth() {
|
||||
if (this._cachedGetSinglePixelWidth === null) {
|
||||
// If transform is [a b] then a pixel (square) is transformed
|
||||
@ -2734,24 +2739,25 @@ const CanvasGraphics = (function CanvasGraphicsClosure() {
|
||||
}
|
||||
|
||||
return this._cachedGetSinglePixelWidth;
|
||||
},
|
||||
getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
|
||||
}
|
||||
|
||||
getCanvasPosition(x, y) {
|
||||
const transform = this.ctx.mozCurrentTransform;
|
||||
return [
|
||||
transform[0] * x + transform[2] * y + transform[4],
|
||||
transform[1] * x + transform[3] * y + transform[5],
|
||||
];
|
||||
},
|
||||
}
|
||||
|
||||
isContentVisible: function CanvasGraphics_isContentVisible() {
|
||||
isContentVisible() {
|
||||
for (let i = this.markedContentStack.length - 1; i >= 0; i--) {
|
||||
if (!this.markedContentStack[i].visible) {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
return true;
|
||||
},
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
for (const op in OPS) {
|
||||
CanvasGraphics.prototype[OPS[op]] = CanvasGraphics.prototype[op];
|
||||
|
||||
Loading…
Reference in New Issue
Block a user