webglimpse
Version:
Webglimpse is a data visualization library for the web.
144 lines • 19.2 kB
JavaScript
/*
* Copyright (c) 2014, Metron, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import { sameColor } from './color';
import { createTextTextureFactory, getTextWidth } from './text';
import { TextureRenderer } from './texture';
import { GL, hasval } from './util/util';
export class Label {
constructor(text, font, fgColor, bgColor) {
this._font = font;
this._text = text;
this._fgColor = fgColor;
this._bgColor = bgColor;
}
get font() {
return this._font;
}
set font(font) {
if (this._font !== font) {
this._font = font;
this._textureFactory = null;
if (this._texture) {
this._texture.dispose();
this._texture = null;
}
}
}
// retained for backwards compatibility, should use fgColor
get color() {
return this._fgColor;
}
// retained for backwards compatibility, should use fgColor
set color(fgColor) {
if (!sameColor(this._fgColor, fgColor)) {
this._fgColor = fgColor;
if (this._texture) {
this._texture.dispose();
this._texture = null;
}
}
}
get fgColor() {
return this._fgColor;
}
set fgColor(fgColor) {
if (!sameColor(this._fgColor, fgColor)) {
this._fgColor = fgColor;
if (this._texture) {
this._texture.dispose();
this._texture = null;
}
}
}
get bgColor() {
return this._bgColor;
}
set bgColor(bgColor) {
if (!sameColor(this._bgColor, bgColor)) {
this._bgColor = bgColor;
}
}
get text() {
return this._text;
}
set text(text) {
if (this._text !== text) {
this._text = text;
if (this._texture) {
this._texture.dispose();
this._texture = null;
}
}
}
get texture() {
if (!this._textureFactory) {
this._textureFactory = (this._font ? createTextTextureFactory(this._font) : null);
}
if (!this._texture) {
this._texture = (this._fgColor && this._text ? this._textureFactory(this._fgColor, this._text) : null);
}
return this._texture;
}
}
export function fitToLabel(label) {
return function (parentPrefSize) {
const texture = label.texture;
parentPrefSize.w = (texture ? texture.w : 0);
parentPrefSize.h = (texture ? texture.h : 0);
};
}
export function newLabelPainter(label, xFrac, yFrac, xAnchor, yAnchor, rotation_CCWRAD, truncateLabel) {
const textureRenderer = new TextureRenderer();
return function (gl, viewport) {
if (hasval(label.bgColor)) {
gl.clearColor(label.bgColor.r, label.bgColor.g, label.bgColor.b, label.bgColor.a);
gl.clear(GL.COLOR_BUFFER_BIT);
}
let labelText = label.text;
if (truncateLabel) {
const xRight = viewport.w - 2 / viewport.w;
while (labelText && labelText !== '...') {
if (getTextWidth(label.font, labelText) > xRight) {
labelText = labelText.substring(0, labelText.length - 4).concat('...');
}
else {
break;
}
}
}
label.text = labelText;
if (label.texture) {
textureRenderer.begin(gl, viewport);
textureRenderer.draw(gl, label.texture, xFrac, yFrac, { xAnchor: xAnchor, yAnchor: label.texture.yAnchor(yAnchor), rotation_CCWRAD: rotation_CCWRAD });
textureRenderer.end(gl);
}
};
}
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Redistributions of source code must retain the above copyright notice, this\r\n *    list of conditions and the following disclaimer.\r\n *\r\n * 2. Redistributions in binary form must reproduce the above copyright notice,\r\n *    this list of conditions and the following disclaimer in the documentation\r\n *    and/or other materials provided with the distribution.\r\n *\r\n * 3. Neither the name of the copyright holder nor the names of its contributors\r\n *    may be used to endorse or promote products derived from this software without\r\n *    specific prior written permission.\r\n *\r\n * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\" AND\r\n * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\r\n * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE\r\n * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR\r\n * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES\r\n * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;\r\n * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON\r\n * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\r\n * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r\n * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r\n */\r\nimport {Color, sameColor} from './color';\r\nimport {TextTextureFactory, TextTexture2D, createTextTextureFactory, getTextWidth} from './text';\r\nimport {Size, BoundsUnmodifiable} from './bounds';\r\nimport {TextureRenderer} from './texture';\r\nimport {GL, hasval} from './util/util';\r\nimport {LayoutPhase1} from './core';\r\n\r\nexport class Label {\r\n    private _font: string;\r\n    private _fgColor: Color;\r\n    private _bgColor: Color;\r\n    private _text: string;\r\n    private _textureFactory: TextTextureFactory;\r\n    private _texture: TextTexture2D;\r\n\r\n    constructor(text?: string, font?: string, fgColor?: Color, bgColor?: Color) {\r\n        this._font = font;\r\n        this._text = text;\r\n        this._fgColor = fgColor;\r\n        this._bgColor = bgColor;\r\n    }\r\n\r\n    get font(): string {\r\n        return this._font;\r\n    }\r\n\r\n    set font(font: string) {\r\n        if (this._font !== font) {\r\n            this._font = font;\r\n            this._textureFactory = null;\r\n            if (this._texture) {\r\n                this._texture.dispose();\r\n                this._texture = null;\r\n            }\r\n        }\r\n    }\r\n\r\n    // retained for backwards compatibility, should use fgColor\r\n    get color(): Color {\r\n        return this._fgColor;\r\n    }\r\n\r\n    // retained for backwards compatibility, should use fgColor\r\n    set color(fgColor: Color) {\r\n        if (!sameColor(this._fgColor, fgColor)) {\r\n            this._fgColor = fgColor;\r\n            if (this._texture) {\r\n                this._texture.dispose();\r\n                this._texture = null;\r\n            }\r\n        }\r\n    }\r\n\r\n    get fgColor(): Color {\r\n        return this._fgColor;\r\n    }\r\n\r\n    set fgColor(fgColor: Color) {\r\n        if (!sameColor(this._fgColor, fgColor)) {\r\n            this._fgColor = fgColor;\r\n            if (this._texture) {\r\n                this._texture.dispose();\r\n                this._texture = null;\r\n            }\r\n        }\r\n    }\r\n\r\n    get bgColor(): Color {\r\n        return this._bgColor;\r\n    }\r\n\r\n    set bgColor(bgColor: Color) {\r\n        if (!sameColor(this._bgColor, bgColor)) {\r\n            this._bgColor = bgColor;\r\n        }\r\n    }\r\n\r\n    get text(): string {\r\n        return this._text;\r\n    }\r\n\r\n    set text(text: string) {\r\n        if (this._text !== text) {\r\n            this._text = text;\r\n            if (this._texture) {\r\n                this._texture.dispose();\r\n                this._texture = null;\r\n            }\r\n        }\r\n    }\r\n\r\n    get texture(): TextTexture2D {\r\n        if (!this._textureFactory) {\r\n            this._textureFactory = (this._font ? createTextTextureFactory(this._font) : null);\r\n        }\r\n        if (!this._texture) {\r\n            this._texture = (this._fgColor && this._text ? this._textureFactory(this._fgColor, this._text) : null);\r\n        }\r\n        return this._texture;\r\n    }\r\n\r\n}\r\n\r\n\r\nexport function fitToLabel(label: Label): LayoutPhase1 {\r\n    return <LayoutPhase1>function (parentPrefSize: Size): void {\r\n        const texture = label.texture;\r\n        parentPrefSize.w = (texture ? texture.w : 0);\r\n        parentPrefSize.h = (texture ? texture.h : 0);\r\n    };\r\n}\r\n\r\n\r\nexport function newLabelPainter(label: Label, xFrac: number, yFrac: number, xAnchor?: number, yAnchor?: number, rotation_CCWRAD?: number, truncateLabel?: boolean) {\r\n    const textureRenderer = new TextureRenderer();\r\n    return function (gl: WebGLRenderingContext, viewport: BoundsUnmodifiable) {\r\n\r\n        if (hasval(label.bgColor)) {\r\n            gl.clearColor(label.bgColor.r, label.bgColor.g, label.bgColor.b, label.bgColor.a);\r\n            gl.clear(GL.COLOR_BUFFER_BIT);\r\n        }\r\n\r\n        let labelText = label.text;\r\n        if (truncateLabel) {\r\n            const xRight = viewport.w - 2 / viewport.w;\r\n            while (labelText && labelText !== '...') {\r\n                if (getTextWidth(label.font, labelText) > xRight) {\r\n                    labelText = labelText.substring(0, labelText.length - 4).concat('...');\r\n                } else {\r\n                    break;\r\n                }\r\n            }\r\n        }\r\n\r\n        label.text = labelText;\r\n        if (label.texture) {\r\n            textureRenderer.begin(gl, viewport);\r\n            textureRenderer.draw(gl, label.texture, xFrac, yFrac, { xAnchor: xAnchor, yAnchor: label.texture.yAnchor(yAnchor), rotation_CCWRAD: rotation_CCWRAD });\r\n            textureRenderer.end(gl);\r\n        }\r\n    };\r\n}\r\n\r\n\r\n\r\n"]}