//// CanvasCommand.h// libraries/script-engine/src//// Created by Ada <ada@thingvellir.net> on 2025-02-27// Copyright 2025 Overte e.V.//// Distributed under the Apache License, Version 2.0.// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// SPDX-License-Identifier: Apache-2.0// /// @addtogroup ScriptEngine/// @{ #ifndef hifi_CanvasCommand_h#define hifi_CanvasCommand_h #include "ScriptValue.h"#include "ScriptValueUtils.h"#include "Scriptable.h" #include <QPainter>#include <QPainterPath> class ScriptEngine; /*@jsdoc * @typedef {object} CanvasImage * @property {ArrayBuffer} data - RGBA8 pixel data * @property {number} width - Image width in pixels * @property {number} height - Image height in pixels */struct CanvasImage { // TODO: TypedArray reference QByteArray buffer; int width, height; bool _ownsData; // true if buffer is valid, false if using TypedArray CanvasImage() : buffer(QByteArray()), width(0), height(0), _ownsData(true) {} CanvasImage(QByteArray buffer, int width, int height) : buffer(buffer), width(width), height(height), _ownsData(true) {}}; /*@jsdoc * @typedef {object} CanvasPathElement * @property {number} type - 0: Move to, 1: Line to, 2: Cubic curve to * @property {number} x * @property {number} y * @property {number} c1x * @property {number} c1y * @property {number} c2x * @property {number} c2y */struct CanvasPathElement { int type; qreal x, y, c1x, c1y, c2x, c2y; CanvasPathElement(int type, qreal x, qreal y) : type(type), x(x), y(y), c1x(0), c1y(0), c2x(0), c2y(0) {} CanvasPathElement(int type, qreal x, qreal y, qreal c1x, qreal c1y, qreal c2x, qreal c2y) : type(type), x(x), y(y), c1x(c1x), c1y(c1y), c2x(c2x), c2y(c2y) {} CanvasPathElement() : type(0), x(0), y(0), c1x(0), c1y(0), c2x(0), c2y(0) {}}; /*@jsdoc * @namespace CanvasCommand * * @hifi-interface * @hifi-client-entity * * @readonly * @property {number} HINT_NO_ANTIALIASING=1 - If set, drawn shapes will have pixelated edges. * @property {number} HINT_NO_TEXT_ANTIALIASING=2 - If set, text will have pixelated edges. * @property {number} HINT_NEAREST_SCALING=4 - If set, drawn images will be scaled using pixelated, nearest-neighbor scaling. * * @property {number} TEXT_ALIGN_LEFT=1 - Align drawn text to the left side of its bounding box. * @property {number} TEXT_ALIGN_RIGHT=2 - Align drawn text to the right side of its bounding box. * @property {number} TEXT_ALIGN_HCENTER=4 - Align drawn text horizontally to the center of its bounding box. * @property {number} TEXT_ALIGN_JUSTIFY=8 - Justifies text horizontally to fit in its bounding box. * @property {number} TEXT_ALIGN_TOP=32 - Align drawn text to the top of its bounding box. * @property {number} TEXT_ALIGN_BOTTOM=64 - Align drawn text to the bottom of its bounding box. * @property {number} TEXT_ALIGN_VCENTER=32 - Align drawn text vertically to the center of its bounding box. * @property {number} TEXT_ALIGN_CENTER=132 - Align drawn text to the center of its bounding box, both horizontally and vertically. * * @property {number} BLEND_SOURCEOVER=0 * @property {number} BLEND_DESTINATIONOVER=1 * @property {number} BLEND_CLEAR=2 * @property {number} BLEND_SOURCE=3 * @property {number} BLEND_DESTINATION=4 * @property {number} BLEND_SOURCEIN=5 * @property {number} BLEND_DESTINATIONIN=6 * @property {number} BLEND_SOURCEOUT=7 * @property {number} BLEND_DESTINATIONOUT=8 * @property {number} BLEND_SOURCEATOP=9 * @property {number} BLEND_DESTINATIONATOP=10 * @property {number} BLEND_XOR=11 * @property {number} BLEND_PLUS=12 * @property {number} BLEND_MULTIPLY=13 * @property {number} BLEND_SCREEN=14 * @property {number} BLEND_OVERLAY=15 * @property {number} BLEND_DARKEN=16 * @property {number} BLEND_LIGHTEN=17 * @property {number} BLEND_COLORDODGE=18 * @property {number} BLEND_COLORBURN=19 * @property {number} BLEND_HARDLIGHT=20 * @property {number} BLEND_SOFTLIGHT=21 * @property {number} BLEND_DIFFERENCE=22 * @property {number} BLEND_EXCLUSION=23 * * @example <caption>Create a canvas entity and draw "Hello, world!" into it as text.</caption> * const CanvasCommand = Script.require("canvasCommand"); * * const canvas = Entities.addEntity({ * type: "Canvas", * position: Vec3.sum(MyAvatar.position, Vec3.multiplyQbyV(MyAvatar.orientation, { x: 0, y: 0, z: -1 })), * dimensions: { x: 1, y: 0.5, z: 0.01 }, * lifetime: 30, // Delete after 30 seconds. * width: 256, * height: 128, * unlit: true, * transparent: true, * }, "local"); * * Entities.canvasPushCommands(canvas, [ * CanvasCommand.color([255, 255, 255, 255]), * CanvasCommand.font("sans-serif", 20), * CanvasCommand.fillText( * "Hello, world!", * 0, 0, * 256, 128, * CanvasCommand.TEXT_ALIGN_CENTER * ), * ]); * * Entities.canvasCommit(canvas); * @example <caption>Create a canvas entity and draw an XOR pattern into it.</caption> * const CanvasCommand = Script.require("canvasCommand"); * * const canvas = Entities.addEntity({ * type: "Canvas", * position: Vec3.sum(MyAvatar.getHeadPosition(), Vec3.multiplyQbyV(MyAvatar.orientation, [0, 0, -2])), * rotation: MyAvatar.orientation, * dimensions: [2, 2, 0.1], * width: 256, * height: 256, * unlit: true, * collisionless: true, * }, "local"); * * const buffer = new Uint8Array(256 * 256 * 4); * const img = {data: buffer.buffer, width: 256, height: 256}; * * for (let x = 0; x < 256; x++) { * for (let y = 0; y < 256; y++) { * let color = x ^ y; * buffer[(y * 256 * 4) + (x * 4) + 0] = color; * buffer[(y * 256 * 4) + (x * 4) + 1] = color; * buffer[(y * 256 * 4) + (x * 4) + 2] = color; * buffer[(y * 256 * 4) + (x * 4) + 3] = 255; * } * } * * Entities.canvasPushPixels(canvas, img); * Entities.canvasCommit(canvas); * * Script.scriptEnding.connect(() => Entities.deleteEntity(canvas)); * * // delete after 10 seconds * Script.setTimeout(() => Script.stop(), 1000 * 10); */ /*@jsdoc * Sets the line width for stroked shapes. * @name CanvasCommand.strokeWidth * @function * @param {number} width - Stroke width in pixels. * @returns {object} */ /*@jsdoc * Sets the stroke and fill color to use. * @name CanvasCommand.color * @function * @param {Color|Vec4} color - Stroke and fill color to use. * @returns {object} */ /*@jsdoc * Sets rendering hints. * @name CanvasCommand.hints * @function * @param {number} hints * @returns {object} */ /*@jsdoc * Sets the blending mode. * @name CanvasCommand.blendMode * @function * @param {number} mode * @returns {object} */ /*@jsdoc * Sets the font to use for {@link CanvasCommand.fillText}. * @name CanvasCommand.font * @function * @param {string} family * @param {number} size=16 - Pixel height * @param {number} weight=400 - 400 is normal, 700 is bold * @param {boolean} italic=false * @returns {object} */ /*@jsdoc * Clears a region of a canvas with transparent black. * @name CanvasCommand.clearRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillPath * @function * @param {CanvasPathElement[]} path * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillEllipse * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillText * @function * @param {string} text * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @param {number} flags * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokePath * @function * @param {CanvasPathElement[]} path * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeArc * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @param {number} startAngle * @param {number} spanAngle * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeEllipse * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.point * @function * @param {number} x * @param {number} y * @returns {object} */ /*@jsdoc * @name CanvasCommand.line * @function * @param {number} x1 * @param {number} y1 * @param {number} x2 * @param {number} y2 * @returns {object} */ /*@jsdoc * @name CanvasCommand.imageCopy * @function * @param {CanvasImage} image * @param {Vec4|Rect} srcRect * @param {Vec4|Rect} destRect * @returns {object} */ struct CanvasCommand { enum Variant { Invalid, SetStrokeWidth, SetColor, SetHints, SetBlendMode, SetFont, ClearRect, FillPath, FillRect, FillEllipse, FillText, StrokePath, StrokeRect, StrokeArc, StrokeEllipse, Point, Line, ImageCopy, }; enum RenderHint { NoPrimitiveAntialiasing = (1 << 0), NoTextAntialiasing = (1 << 1), NearestImageScaling = (1 << 2), }; static CanvasCommand none() { return CanvasCommand {}; } static CanvasCommand setStrokeWidth(qreal width) { CanvasCommand cmd; cmd.kind = SetStrokeWidth; cmd._float[0] = width; return cmd; } static CanvasCommand setColor(const QColor& color) { CanvasCommand cmd; cmd.kind = SetColor; cmd._color = color; return cmd; } static CanvasCommand setHints(int hints) { CanvasCommand cmd; cmd.kind = SetHints; cmd._int[0] = hints; return cmd; } static CanvasCommand setBlendMode(int mode) { CanvasCommand cmd; cmd.kind = SetBlendMode; cmd._int[0] = mode; return cmd; } static CanvasCommand setFont(const QString& family, int size, int weight, bool italic) { CanvasCommand cmd; cmd.kind = SetFont; cmd._text = family; cmd._int[0] = size; cmd._int[1] = weight; cmd._int[2] = italic; return cmd; } static CanvasCommand clearRect(int x, int y, int w, int h) { CanvasCommand cmd; cmd.kind = ClearRect; cmd._int[0] = x; cmd._int[1] = y; cmd._int[2] = w; cmd._int[3] = h; return cmd; } static CanvasCommand fillPath(const QPainterPath& path) { CanvasCommand cmd; cmd.kind = FillPath; cmd._paintPath = path; return cmd; } static CanvasCommand fillRect(const QRectF& rect) { CanvasCommand cmd; cmd.kind = FillRect; return CanvasCommand { .kind = FillRect, ._rect = rect }; } static CanvasCommand fillEllipse(const QRectF& rect) { CanvasCommand cmd; cmd.kind = FillEllipse; cmd._rect = rect; return cmd; } static CanvasCommand fillText(const QString& text, const QRectF& rect, int flag) { CanvasCommand cmd; cmd.kind = FillText; cmd._text = text; cmd._rect = rect; cmd._int[0] = flag; return cmd; } static CanvasCommand strokePath(const QPainterPath& path) { CanvasCommand cmd; cmd.kind = StrokePath; cmd._paintPath = path; return cmd; } static CanvasCommand strokeRect(const QRectF& rect) { CanvasCommand cmd; cmd.kind = StrokeRect; cmd._rect = rect; return cmd; } static CanvasCommand strokeArc(const QRectF& rect, qreal startAngle, qreal spanAngle) { CanvasCommand cmd; cmd.kind = StrokeArc; cmd._rect = rect; cmd._float[0] = startAngle; cmd._float[1] = spanAngle; return cmd; } static CanvasCommand strokeEllipse(const QRectF& rect) { CanvasCommand cmd; cmd.kind = StrokeEllipse; cmd._rect = rect; return cmd; } static CanvasCommand point(qreal x, qreal y) { CanvasCommand cmd; cmd.kind = Point; cmd._point = QPointF(x, y); return cmd; } static CanvasCommand line(qreal x1, qreal y1, qreal x2, qreal y2) { CanvasCommand cmd; cmd.kind = Line; cmd._line = QLineF(x1, y1, x2, y2); return cmd; } static CanvasCommand imageCopy(const CanvasImage& image, const QRectF& src, const QRectF& dst) { CanvasCommand cmd; cmd.kind = ImageCopy; cmd._rect = src; cmd._rect2 = dst; cmd._image = image; return cmd; } Variant kind = Invalid; QRectF _rect = QRectF(); QRectF _rect2 = QRectF(); QString _text = QString(); QPointF _point = QPointF(); QLineF _line = QLineF(); qreal _float[4] = {}; int _int[4] = {};Lines 1–500 of 535. Load more
// // CanvasCommand.h // libraries/script-engine/src // // Created by Ada <ada@thingvellir.net> on 2025-02-27 // Copyright 2025 Overte e.V. // // Distributed under the Apache License, Version 2.0. // See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html // SPDX-License-Identifier: Apache-2.0 // /// @addtogroup ScriptEngine /// @{ #ifndef hifi_CanvasCommand_h #define hifi_CanvasCommand_h #include "ScriptValue.h" #include "ScriptValueUtils.h" #include "Scriptable.h" #include <QPainter> #include <QPainterPath> class ScriptEngine; /*@jsdoc * @typedef {object} CanvasImage * @property {ArrayBuffer} data - RGBA8 pixel data * @property {number} width - Image width in pixels * @property {number} height - Image height in pixels */ struct CanvasImage { // TODO: TypedArray reference QByteArray buffer; int width, height; bool _ownsData; // true if buffer is valid, false if using TypedArray CanvasImage() : buffer(QByteArray()), width(0), height(0), _ownsData(true) {} CanvasImage(QByteArray buffer, int width, int height) : buffer(buffer), width(width), height(height), _ownsData(true) {} }; /*@jsdoc * @typedef {object} CanvasPathElement * @property {number} type - 0: Move to, 1: Line to, 2: Cubic curve to * @property {number} x * @property {number} y * @property {number} c1x * @property {number} c1y * @property {number} c2x * @property {number} c2y */ struct CanvasPathElement { int type; qreal x, y, c1x, c1y, c2x, c2y; CanvasPathElement(int type, qreal x, qreal y) : type(type), x(x), y(y), c1x(0), c1y(0), c2x(0), c2y(0) {} CanvasPathElement(int type, qreal x, qreal y, qreal c1x, qreal c1y, qreal c2x, qreal c2y) : type(type), x(x), y(y), c1x(c1x), c1y(c1y), c2x(c2x), c2y(c2y) {} CanvasPathElement() : type(0), x(0), y(0), c1x(0), c1y(0), c2x(0), c2y(0) {} }; /*@jsdoc * @namespace CanvasCommand * * @hifi-interface * @hifi-client-entity * * @readonly * @property {number} HINT_NO_ANTIALIASING=1 - If set, drawn shapes will have pixelated edges. * @property {number} HINT_NO_TEXT_ANTIALIASING=2 - If set, text will have pixelated edges. * @property {number} HINT_NEAREST_SCALING=4 - If set, drawn images will be scaled using pixelated, nearest-neighbor scaling. * * @property {number} TEXT_ALIGN_LEFT=1 - Align drawn text to the left side of its bounding box. * @property {number} TEXT_ALIGN_RIGHT=2 - Align drawn text to the right side of its bounding box. * @property {number} TEXT_ALIGN_HCENTER=4 - Align drawn text horizontally to the center of its bounding box. * @property {number} TEXT_ALIGN_JUSTIFY=8 - Justifies text horizontally to fit in its bounding box. * @property {number} TEXT_ALIGN_TOP=32 - Align drawn text to the top of its bounding box. * @property {number} TEXT_ALIGN_BOTTOM=64 - Align drawn text to the bottom of its bounding box. * @property {number} TEXT_ALIGN_VCENTER=32 - Align drawn text vertically to the center of its bounding box. * @property {number} TEXT_ALIGN_CENTER=132 - Align drawn text to the center of its bounding box, both horizontally and vertically. * * @property {number} BLEND_SOURCEOVER=0 * @property {number} BLEND_DESTINATIONOVER=1 * @property {number} BLEND_CLEAR=2 * @property {number} BLEND_SOURCE=3 * @property {number} BLEND_DESTINATION=4 * @property {number} BLEND_SOURCEIN=5 * @property {number} BLEND_DESTINATIONIN=6 * @property {number} BLEND_SOURCEOUT=7 * @property {number} BLEND_DESTINATIONOUT=8 * @property {number} BLEND_SOURCEATOP=9 * @property {number} BLEND_DESTINATIONATOP=10 * @property {number} BLEND_XOR=11 * @property {number} BLEND_PLUS=12 * @property {number} BLEND_MULTIPLY=13 * @property {number} BLEND_SCREEN=14 * @property {number} BLEND_OVERLAY=15 * @property {number} BLEND_DARKEN=16 * @property {number} BLEND_LIGHTEN=17 * @property {number} BLEND_COLORDODGE=18 * @property {number} BLEND_COLORBURN=19 * @property {number} BLEND_HARDLIGHT=20 * @property {number} BLEND_SOFTLIGHT=21 * @property {number} BLEND_DIFFERENCE=22 * @property {number} BLEND_EXCLUSION=23 * * @example <caption>Create a canvas entity and draw "Hello, world!" into it as text.</caption> * const CanvasCommand = Script.require("canvasCommand"); * * const canvas = Entities.addEntity({ * type: "Canvas", * position: Vec3.sum(MyAvatar.position, Vec3.multiplyQbyV(MyAvatar.orientation, { x: 0, y: 0, z: -1 })), * dimensions: { x: 1, y: 0.5, z: 0.01 }, * lifetime: 30, // Delete after 30 seconds. * width: 256, * height: 128, * unlit: true, * transparent: true, * }, "local"); * * Entities.canvasPushCommands(canvas, [ * CanvasCommand.color([255, 255, 255, 255]), * CanvasCommand.font("sans-serif", 20), * CanvasCommand.fillText( * "Hello, world!", * 0, 0, * 256, 128, * CanvasCommand.TEXT_ALIGN_CENTER * ), * ]); * * Entities.canvasCommit(canvas); * @example <caption>Create a canvas entity and draw an XOR pattern into it.</caption> * const CanvasCommand = Script.require("canvasCommand"); * * const canvas = Entities.addEntity({ * type: "Canvas", * position: Vec3.sum(MyAvatar.getHeadPosition(), Vec3.multiplyQbyV(MyAvatar.orientation, [0, 0, -2])), * rotation: MyAvatar.orientation, * dimensions: [2, 2, 0.1], * width: 256, * height: 256, * unlit: true, * collisionless: true, * }, "local"); * * const buffer = new Uint8Array(256 * 256 * 4); * const img = {data: buffer.buffer, width: 256, height: 256}; * * for (let x = 0; x < 256; x++) { * for (let y = 0; y < 256; y++) { * let color = x ^ y; * buffer[(y * 256 * 4) + (x * 4) + 0] = color; * buffer[(y * 256 * 4) + (x * 4) + 1] = color; * buffer[(y * 256 * 4) + (x * 4) + 2] = color; * buffer[(y * 256 * 4) + (x * 4) + 3] = 255; * } * } * * Entities.canvasPushPixels(canvas, img); * Entities.canvasCommit(canvas); * * Script.scriptEnding.connect(() => Entities.deleteEntity(canvas)); * * // delete after 10 seconds * Script.setTimeout(() => Script.stop(), 1000 * 10); */ /*@jsdoc * Sets the line width for stroked shapes. * @name CanvasCommand.strokeWidth * @function * @param {number} width - Stroke width in pixels. * @returns {object} */ /*@jsdoc * Sets the stroke and fill color to use. * @name CanvasCommand.color * @function * @param {Color|Vec4} color - Stroke and fill color to use. * @returns {object} */ /*@jsdoc * Sets rendering hints. * @name CanvasCommand.hints * @function * @param {number} hints * @returns {object} */ /*@jsdoc * Sets the blending mode. * @name CanvasCommand.blendMode * @function * @param {number} mode * @returns {object} */ /*@jsdoc * Sets the font to use for {@link CanvasCommand.fillText}. * @name CanvasCommand.font * @function * @param {string} family * @param {number} size=16 - Pixel height * @param {number} weight=400 - 400 is normal, 700 is bold * @param {boolean} italic=false * @returns {object} */ /*@jsdoc * Clears a region of a canvas with transparent black. * @name CanvasCommand.clearRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillPath * @function * @param {CanvasPathElement[]} path * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillEllipse * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.fillText * @function * @param {string} text * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @param {number} flags * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokePath * @function * @param {CanvasPathElement[]} path * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeRect * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeArc * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @param {number} startAngle * @param {number} spanAngle * @returns {object} */ /*@jsdoc * @name CanvasCommand.strokeEllipse * @function * @param {number} x - Left of the rectangle. * @param {number} x - Top of the rectangle. * @param {number} w - Width of the rectangle. * @param {number} h - Height of the rectangle. * @returns {object} */ /*@jsdoc * @name CanvasCommand.point * @function * @param {number} x * @param {number} y * @returns {object} */ /*@jsdoc * @name CanvasCommand.line * @function * @param {number} x1 * @param {number} y1 * @param {number} x2 * @param {number} y2 * @returns {object} */ /*@jsdoc * @name CanvasCommand.imageCopy * @function * @param {CanvasImage} image * @param {Vec4|Rect} srcRect * @param {Vec4|Rect} destRect * @returns {object} */ struct CanvasCommand { enum Variant { Invalid, SetStrokeWidth, SetColor, SetHints, SetBlendMode, SetFont, ClearRect, FillPath, FillRect, FillEllipse, FillText, StrokePath, StrokeRect, StrokeArc, StrokeEllipse, Point, Line, ImageCopy, }; enum RenderHint { NoPrimitiveAntialiasing = (1 << 0), NoTextAntialiasing = (1 << 1), NearestImageScaling = (1 << 2), }; static CanvasCommand none() { return CanvasCommand {}; } static CanvasCommand setStrokeWidth(qreal width) { CanvasCommand cmd; cmd.kind = SetStrokeWidth; cmd._float[0] = width; return cmd; } static CanvasCommand setColor(const QColor& color) { CanvasCommand cmd; cmd.kind = SetColor; cmd._color = color; return cmd; } static CanvasCommand setHints(int hints) { CanvasCommand cmd; cmd.kind = SetHints; cmd._int[0] = hints; return cmd; } static CanvasCommand setBlendMode(int mode) { CanvasCommand cmd; cmd.kind = SetBlendMode; cmd._int[0] = mode; return cmd; } static CanvasCommand setFont(const QString& family, int size, int weight, bool italic) { CanvasCommand cmd; cmd.kind = SetFont; cmd._text = family; cmd._int[0] = size; cmd._int[1] = weight; cmd._int[2] = italic; return cmd; } static CanvasCommand clearRect(int x, int y, int w, int h) { CanvasCommand cmd; cmd.kind = ClearRect; cmd._int[0] = x; cmd._int[1] = y; cmd._int[2] = w; cmd._int[3] = h; return cmd; } static CanvasCommand fillPath(const QPainterPath& path) { CanvasCommand cmd; cmd.kind = FillPath; cmd._paintPath = path; return cmd; } static CanvasCommand fillRect(const QRectF& rect) { CanvasCommand cmd; cmd.kind = FillRect; return CanvasCommand { .kind = FillRect, ._rect = rect }; } static CanvasCommand fillEllipse(const QRectF& rect) { CanvasCommand cmd; cmd.kind = FillEllipse; cmd._rect = rect; return cmd; } static CanvasCommand fillText(const QString& text, const QRectF& rect, int flag) { CanvasCommand cmd; cmd.kind = FillText; cmd._text = text; cmd._rect = rect; cmd._int[0] = flag; return cmd; } static CanvasCommand strokePath(const QPainterPath& path) { CanvasCommand cmd; cmd.kind = StrokePath; cmd._paintPath = path; return cmd; } static CanvasCommand strokeRect(const QRectF& rect) { CanvasCommand cmd; cmd.kind = StrokeRect; cmd._rect = rect; return cmd; } static CanvasCommand strokeArc(const QRectF& rect, qreal startAngle, qreal spanAngle) { CanvasCommand cmd; cmd.kind = StrokeArc; cmd._rect = rect; cmd._float[0] = startAngle; cmd._float[1] = spanAngle; return cmd; } static CanvasCommand strokeEllipse(const QRectF& rect) { CanvasCommand cmd; cmd.kind = StrokeEllipse; cmd._rect = rect; return cmd; } static CanvasCommand point(qreal x, qreal y) { CanvasCommand cmd; cmd.kind = Point; cmd._point = QPointF(x, y); return cmd; } static CanvasCommand line(qreal x1, qreal y1, qreal x2, qreal y2) { CanvasCommand cmd; cmd.kind = Line; cmd._line = QLineF(x1, y1, x2, y2); return cmd; } static CanvasCommand imageCopy(const CanvasImage& image, const QRectF& src, const QRectF& dst) { CanvasCommand cmd; cmd.kind = ImageCopy; cmd._rect = src; cmd._rect2 = dst; cmd._image = image; return cmd; } Variant kind = Invalid; QRectF _rect = QRectF(); QRectF _rect2 = QRectF(); QString _text = QString(); QPointF _point = QPointF(); QLineF _line = QLineF(); qreal _float[4] = {}; int _int[4] = {};