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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var tests = [
function testDocumentNeedsScrollbars() {
var viewport =
new Viewport(new MockWindow(100, 100), new MockSizer(), function() {},
function() {}, function() {}, 10, 1, 0);
var scrollbars;
viewport.setDocumentDimensions(new MockDocumentDimensions(90, 90));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertFalse(scrollbars.vertical);
chrome.test.assertFalse(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(100, 100));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertFalse(scrollbars.vertical);
chrome.test.assertFalse(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(110, 110));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertTrue(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(90, 101));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertFalse(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(101, 90));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertFalse(scrollbars.vertical);
chrome.test.assertTrue(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(91, 101));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertTrue(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(101, 91));
scrollbars = viewport.documentNeedsScrollbars_(1);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertTrue(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(40, 51));
scrollbars = viewport.documentNeedsScrollbars_(2);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertFalse(scrollbars.horizontal);
viewport.setDocumentDimensions(new MockDocumentDimensions(101, 202));
scrollbars = viewport.documentNeedsScrollbars_(0.5);
chrome.test.assertTrue(scrollbars.vertical);
chrome.test.assertFalse(scrollbars.horizontal);
chrome.test.succeed();
},
function testSetZoom() {
var mockSizer = new MockSizer();
var mockWindow = new MockWindow(100, 100, mockSizer);
var mockCallback = new MockViewportChangedCallback();
var viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 0, 1, 0);
// Test setting the zoom without the document dimensions set. The sizer
// shouldn't change size.
mockCallback.reset();
viewport.setZoom(0.5);
chrome.test.assertEq(0.5, viewport.zoom);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('0px', mockSizer.style.width);
chrome.test.assertEq('0px', mockSizer.style.height);
chrome.test.assertEq(0, mockWindow.pageXOffset);
chrome.test.assertEq(0, mockWindow.pageYOffset);
viewport.setZoom(1);
viewport.setDocumentDimensions(new MockDocumentDimensions(200, 200));
// Test zooming out.
mockCallback.reset();
viewport.setZoom(0.5);
chrome.test.assertEq(0.5, viewport.zoom);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq('100px', mockSizer.style.height);
// Test zooming in.
mockCallback.reset();
viewport.setZoom(2);
chrome.test.assertEq(2, viewport.zoom);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('400px', mockSizer.style.width);
chrome.test.assertEq('400px', mockSizer.style.height);
// Test that the scroll position scales correctly. It scales relative to the
// top-left of the page.
viewport.setZoom(1);
mockWindow.pageXOffset = 50;
mockWindow.pageYOffset = 50;
viewport.setZoom(2);
chrome.test.assertEq('400px', mockSizer.style.width);
chrome.test.assertEq('400px', mockSizer.style.height);
chrome.test.assertEq(100, mockWindow.pageXOffset);
chrome.test.assertEq(100, mockWindow.pageYOffset);
mockWindow.scrollTo(250, 250);
viewport.setZoom(1);
chrome.test.assertEq('200px', mockSizer.style.width);
chrome.test.assertEq('200px', mockSizer.style.height);
chrome.test.assertEq(100, mockWindow.pageXOffset);
chrome.test.assertEq(100, mockWindow.pageYOffset);
var documentDimensions = new MockDocumentDimensions(0, 0);
documentDimensions.addPage(200, 200);
viewport.setDocumentDimensions(documentDimensions);
mockWindow.scrollTo(0, 0);
viewport.fitToPage();
viewport.setZoom(1);
chrome.test.assertEq(Viewport.FittingType.NONE, viewport.fittingType);
chrome.test.assertEq('200px', mockSizer.style.width);
chrome.test.assertEq('200px', mockSizer.style.height);
chrome.test.assertEq(0, mockWindow.pageXOffset);
chrome.test.assertEq(0, mockWindow.pageYOffset);
viewport.fitToWidth();
viewport.setZoom(1);
chrome.test.assertEq(Viewport.FittingType.NONE, viewport.fittingType);
chrome.test.assertEq('200px', mockSizer.style.width);
chrome.test.assertEq('200px', mockSizer.style.height);
chrome.test.assertEq(0, mockWindow.pageXOffset);
chrome.test.assertEq(0, mockWindow.pageYOffset);
chrome.test.succeed();
},
function testGetMostVisiblePage() {
var mockWindow = new MockWindow(100, 100);
var viewport = new Viewport(mockWindow, new MockSizer(), function() {},
function() {}, function() {}, 0, 1, 0);
var documentDimensions = new MockDocumentDimensions(100, 100);
documentDimensions.addPage(50, 100);
documentDimensions.addPage(100, 100);
documentDimensions.addPage(100, 200);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
// Scrolled to the start of the first page.
mockWindow.scrollTo(0, 0);
chrome.test.assertEq(0, viewport.getMostVisiblePage());
// Scrolled to the start of the second page.
mockWindow.scrollTo(0, 100);
chrome.test.assertEq(1, viewport.getMostVisiblePage());
// Scrolled half way through the first page.
mockWindow.scrollTo(0, 50);
chrome.test.assertEq(0, viewport.getMostVisiblePage());
// Scrolled just over half way through the first page.
mockWindow.scrollTo(0, 51);
chrome.test.assertEq(1, viewport.getMostVisiblePage());
// Scrolled most of the way through the second page.
mockWindow.scrollTo(0, 180);
chrome.test.assertEq(2, viewport.getMostVisiblePage());
// Scrolled just past half way through the second page.
mockWindow.scrollTo(0, 160);
chrome.test.assertEq(1, viewport.getMostVisiblePage());
// Scrolled just over half way through the first page with 2x zoom.
viewport.setZoom(2);
mockWindow.scrollTo(0, 151);
chrome.test.assertEq(1, viewport.getMostVisiblePage());
// Zoomed out with the entire document visible.
viewport.setZoom(0.25);
mockWindow.scrollTo(0, 0);
chrome.test.assertEq(0, viewport.getMostVisiblePage());
chrome.test.succeed();
},
function testFitToWidth() {
var mockWindow = new MockWindow(100, 100);
var mockSizer = new MockSizer();
var mockCallback = new MockViewportChangedCallback();
var viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 0, 1, 0);
var documentDimensions = new MockDocumentDimensions();
// Test with a document width which matches the window width.
documentDimensions.addPage(100, 100);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(0.1);
mockCallback.reset();
viewport.fitToWidth();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_WIDTH,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq(1, viewport.zoom);
// Test with a document width which is twice the size of the window width.
documentDimensions.reset();
documentDimensions.addPage(200, 100);
viewport.setDocumentDimensions(documentDimensions);
mockCallback.reset();
viewport.fitToWidth();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_WIDTH,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq(0.5, viewport.zoom);
// Test with a document width which is half the size of the window width.
documentDimensions.reset();
documentDimensions.addPage(50, 100);
viewport.setDocumentDimensions(documentDimensions);
mockCallback.reset();
viewport.fitToWidth();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_WIDTH,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq(2, viewport.zoom);
// Test that the scroll position stays the same relative to the page after
// fit to page is called.
documentDimensions.reset();
documentDimensions.addPage(50, 400);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
mockWindow.scrollTo(0, 100);
mockCallback.reset();
viewport.fitToWidth();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_WIDTH,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq(2, viewport.zoom);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(200, viewport.position.y);
// Test fitting works with scrollbars. The page will need to be zoomed to
// fit to width, which will cause the page height to span outside of the
// viewport, triggering 15px scrollbars to be shown.
viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 15, 1, 0);
documentDimensions.reset();
documentDimensions.addPage(50, 100);
viewport.setDocumentDimensions(documentDimensions);
mockCallback.reset();
viewport.fitToWidth();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_WIDTH,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('85px', mockSizer.style.width);
chrome.test.assertEq(1.7, viewport.zoom);
chrome.test.succeed();
},
function testFitToPage() {
var mockWindow = new MockWindow(100, 100);
var mockSizer = new MockSizer();
var mockCallback = new MockViewportChangedCallback();
var viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 0, 1, 0);
var documentDimensions = new MockDocumentDimensions();
// Test with a page size which matches the window size.
documentDimensions.addPage(100, 100);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(0.1);
mockCallback.reset();
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq('100px', mockSizer.style.height);
chrome.test.assertEq(1, viewport.zoom);
// Test with a page size whose width is larger than its height.
documentDimensions.reset();
documentDimensions.addPage(200, 100);
viewport.setDocumentDimensions(documentDimensions);
mockCallback.reset();
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq('50px', mockSizer.style.height);
chrome.test.assertEq(0.5, viewport.zoom);
// Test with a page size whose height is larger than its width.
documentDimensions.reset();
documentDimensions.addPage(100, 200);
viewport.setDocumentDimensions(documentDimensions);
mockCallback.reset();
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('50px', mockSizer.style.width);
chrome.test.assertEq('100px', mockSizer.style.height);
chrome.test.assertEq(0.5, viewport.zoom);
// Test that when there are multiple pages the height of the most visible
// page and the width of the widest page are sized to.
documentDimensions.reset();
documentDimensions.addPage(100, 100);
documentDimensions.addPage(200, 400);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
mockWindow.scrollTo(0, 0);
mockCallback.reset();
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('100px', mockSizer.style.width);
chrome.test.assertEq('250px', mockSizer.style.height);
chrome.test.assertEq(0.5, viewport.zoom);
viewport.setZoom(1);
mockWindow.scrollTo(0, 100);
mockCallback.reset();
viewport.fitToPage();
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq('50px', mockSizer.style.width);
chrome.test.assertEq('125px', mockSizer.style.height);
chrome.test.assertEq(0.25, viewport.zoom);
// Test that the top of the most visible page is scrolled to.
documentDimensions.reset();
documentDimensions.addPage(200, 200);
documentDimensions.addPage(100, 400);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
mockWindow.scrollTo(0, 0);
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertEq(0.5, viewport.zoom);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(0, viewport.position.y);
viewport.setZoom(1);
mockWindow.scrollTo(0, 175);
viewport.fitToPage();
chrome.test.assertEq(0.25, viewport.zoom);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(50, viewport.position.y);
// Test that when the window size changes, fit-to-page occurs but does not
// scroll to the top of the page (it should stay at the scaled scroll
// position).
mockWindow.scrollTo(0, 0);
viewport.fitToPage();
chrome.test.assertEq(Viewport.FittingType.FIT_TO_PAGE,
viewport.fittingType);
chrome.test.assertEq(0.5, viewport.zoom);
mockWindow.scrollTo(0, 10);
mockWindow.setSize(50, 50);
chrome.test.assertEq(0.25, viewport.zoom);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(5, viewport.position.y);
chrome.test.succeed();
},
function testGoToPage() {
var mockWindow = new MockWindow(100, 100);
var mockSizer = new MockSizer();
var mockCallback = new MockViewportChangedCallback();
var viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 0, 1, 0);
var documentDimensions = new MockDocumentDimensions();
documentDimensions.addPage(100, 100);
documentDimensions.addPage(200, 200);
documentDimensions.addPage(100, 400);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
mockCallback.reset();
viewport.goToPage(0);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(0, viewport.position.y);
mockCallback.reset();
viewport.goToPage(1);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(100, viewport.position.y);
mockCallback.reset();
viewport.goToPage(2);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(300, viewport.position.y);
viewport.setZoom(0.5);
mockCallback.reset();
viewport.goToPage(2);
chrome.test.assertTrue(mockCallback.wasCalled);
chrome.test.assertEq(0, viewport.position.x);
chrome.test.assertEq(150, viewport.position.y);
chrome.test.succeed();
},
function testGetPageScreenRect() {
var mockWindow = new MockWindow(100, 100);
var mockSizer = new MockSizer();
var mockCallback = new MockViewportChangedCallback();
var viewport = new Viewport(mockWindow, mockSizer, mockCallback.callback,
function() {}, function() {}, 0, 1, 0);
var documentDimensions = new MockDocumentDimensions();
documentDimensions.addPage(100, 100);
documentDimensions.addPage(200, 200);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
// Test that the rect of the first page is positioned/sized correctly.
mockWindow.scrollTo(0, 0);
var rect1 = viewport.getPageScreenRect(0);
chrome.test.assertEq(Viewport.PAGE_SHADOW.left + 100 / 2, rect1.x);
chrome.test.assertEq(Viewport.PAGE_SHADOW.top, rect1.y);
chrome.test.assertEq(100 - Viewport.PAGE_SHADOW.right -
Viewport.PAGE_SHADOW.left, rect1.width);
chrome.test.assertEq(100 - Viewport.PAGE_SHADOW.bottom -
Viewport.PAGE_SHADOW.top, rect1.height);
// Check that when we scroll, the rect of the first page is updated
// correctly.
mockWindow.scrollTo(100, 10);
var rect2 = viewport.getPageScreenRect(0);
chrome.test.assertEq(rect1.x - 100, rect2.x);
chrome.test.assertEq(rect1.y - 10, rect2.y);
chrome.test.assertEq(rect1.width, rect2.width);
chrome.test.assertEq(rect1.height, rect2.height);
// Check the rect of the second page is positioned/sized correctly.
mockWindow.scrollTo(0, 100);
rect1 = viewport.getPageScreenRect(1);
chrome.test.assertEq(Viewport.PAGE_SHADOW.left, rect1.x);
chrome.test.assertEq(Viewport.PAGE_SHADOW.top, rect1.y);
chrome.test.assertEq(200 - Viewport.PAGE_SHADOW.right -
Viewport.PAGE_SHADOW.left, rect1.width);
chrome.test.assertEq(200 - Viewport.PAGE_SHADOW.bottom -
Viewport.PAGE_SHADOW.top, rect1.height);
chrome.test.succeed();
},
function testBeforeZoomAfterZoom() {
var mockWindow = new MockWindow(100, 100);
var mockSizer = new MockSizer();
var viewport;
var afterZoomCalled = false;
var beforeZoomCalled = false;
var afterZoom = function() {
afterZoomCalled = true;
chrome.test.assertTrue(beforeZoomCalled);
chrome.test.assertEq(0.5, viewport.zoom);
};
var beforeZoom = function() {
beforeZoomCalled = true;
chrome.test.assertFalse(afterZoomCalled);
chrome.test.assertEq(1, viewport.zoom);
};
viewport = new Viewport(mockWindow, mockSizer, function() {},
beforeZoom, afterZoom, 0, 1, 0);
viewport.setZoom(0.5);
chrome.test.succeed();
},
function testInitialSetDocumentDimensionsZoomConstrained() {
var viewport =
new Viewport(new MockWindow(100, 100), new MockSizer(), function() {},
function() {}, function() {}, 0, 1.2, 0);
viewport.setDocumentDimensions(new MockDocumentDimensions(50, 50));
chrome.test.assertEq(1.2, viewport.zoom);
chrome.test.succeed();
},
function testInitialSetDocumentDimensionsZoomUnconstrained() {
var viewport = new Viewport(
new MockWindow(100, 100),
new MockSizer(), function() {}, function() {}, function() {}, 0, 3, 0);
viewport.setDocumentDimensions(new MockDocumentDimensions(50, 50));
chrome.test.assertEq(2, viewport.zoom);
chrome.test.succeed();
},
function testToolbarHeightOffset() {
var mockSizer = new MockSizer();
var mockWindow = new MockWindow(100, 100);
var viewport = new Viewport(mockWindow,
mockSizer, function() {}, function() {}, function() {}, 0, 1, 50);
var documentDimensions = new MockDocumentDimensions(0, 0);
documentDimensions.addPage(50, 500);
viewport.setDocumentDimensions(documentDimensions);
viewport.setZoom(1);
// Check that the sizer incorporates the toolbar height.
chrome.test.assertEq('550px', mockSizer.style.height);
chrome.test.assertEq('50px', mockSizer.style.width);
chrome.test.assertEq(0, viewport.position.x);
// Check the sizer incorporates the toolbar height correctly even if zoomed.
viewport.setZoom(2);
chrome.test.assertEq('1050px', mockSizer.style.height);
chrome.test.assertEq('100px', mockSizer.style.width);
// Test that the viewport scrolls to the correct offset when fit-to-page is
// enabled. The top of the viewport should be at the start of the document.
viewport.fitToPage();
chrome.test.assertEq(0, viewport.position.y);
// Check that going to a page scrolls to the correct offset when fit-to-page
// is enabled. The top of the viewport should be at the start of the
// document.
mockWindow.scrollTo(0, 100);
viewport.goToPage(0);
chrome.test.assertEq(0, viewport.position.y);
// Check that going to a page scrolls to the correct offset when fit-to-page
// is not enabled. The top of the viewport should be before start of the
// document.
viewport.setZoom(1);
viewport.goToPage(0);
chrome.test.assertEq(-50, viewport.position.y);
chrome.test.succeed();
}
];
chrome.test.runTests(tests);
|
