webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 152 insertions, 0 deletions

diff --git a/Source/WebCore/Modules/modern-media-controls/controls/slider.js b/Source/WebCore/Modules/modern-media-controls/controls/slider.js
new file mode 100644
index 000000000..c32d662b8
--- /dev/null
+++ b/Source/WebCore/Modules/modern-media-controls/controls/slider.js
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2016 Apple 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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.
+ */
+
+class Slider extends LayoutItem
+{
+
+    constructor({ layoutDelegate = null, cssClassName = "" } = {})
+    {
+        super({
+            element: `<div class="slider ${cssClassName}"></div>`,
+            layoutDelegate
+        });
+
+        this._canvas = new LayoutNode(`<canvas></canvas>`);
+
+        this._input = new LayoutNode(`<input type="range" min="0" max="1" step="0.001" />`);
+        this._input.element.addEventListener("change", this);
+        this._input.element.addEventListener("input", this);
+
+        this.value = 0;
+
+        this.children = [this._canvas, this._input];
+    }
+
+    // Public
+
+    get value()
+    {
+        if (this._value !== undefined)
+            return this._value;
+        return parseFloat(this._input.element.value);
+    }
+
+    set value(value)
+    {
+        if (this._valueIsChanging)
+            return;
+
+        this._value = value;
+        this.markDirtyProperty("value");
+        this.needsLayout = true;
+    }
+
+    get width()
+    {
+        return super.width;
+    }
+
+    set width(width)
+    {
+        super.width = width;
+        this.needsLayout = true;
+    }
+
+    // Protected
+
+    handleEvent(event)
+    {
+        switch (event.type) {
+        case "input":
+            this._handleInputEvent();
+            break;
+        case "change":
+            this._handleChangeEvent();
+            break;
+        }
+    }
+
+    commitProperty(propertyName)
+    {
+        switch (propertyName) {
+        case "value":
+            this._input.element.value = this._value;
+            delete this._value;
+            break;
+        case "width":
+            this._canvas.element.width = this.width * window.devicePixelRatio;
+        case "height":
+            this._canvas.element.height = this.height * window.devicePixelRatio;
+        default :
+            super.commitProperty(propertyName);
+            break;
+        }
+    }
+
+    layout()
+    {
+        super.layout();
+        this.draw(this._canvas.element.getContext("2d"));
+    }
+
+    draw(ctx)
+    {
+        // Implemented by subclasses.
+    }
+
+    // Private
+
+    _handleInputEvent()
+    {
+        if (!this._valueIsChanging && this.uiDelegate && typeof this.uiDelegate.controlValueWillStartChanging === "function")
+            this.uiDelegate.controlValueWillStartChanging(this);
+        this._valueIsChanging = true;
+        if (this.uiDelegate && typeof this.uiDelegate.controlValueDidChange === "function")
+            this.uiDelegate.controlValueDidChange(this);
+
+        this.needsLayout = true;
+    }
+
+    _handleChangeEvent()
+    {
+        delete this._valueIsChanging;
+        if (this.uiDelegate && typeof this.uiDelegate.controlValueDidStopChanging === "function")
+            this.uiDelegate.controlValueDidStopChanging(this);
+
+        this.needsLayout = true;
+    }
+
+}
+
+function addRoundedRect(ctx, x, y, width, height, radius) {
+    ctx.moveTo(x + radius, y);
+    ctx.arcTo(x + width, y, x + width, y + radius, radius);
+    ctx.lineTo(x + width, y + height - radius);
+    ctx.arcTo(x + width, y + height, x + width - radius, y + height, radius);
+    ctx.lineTo(x + radius, y + height);
+    ctx.arcTo(x, y + height, x, y + height - radius, radius);
+    ctx.lineTo(x, y + radius);
+    ctx.arcTo(x, y, x + radius, y, radius);
+}