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//
// PackageCellView.cs
//
// Author:
// Matt Ward <matt.ward@xamarin.com>
//
// Copyright (c) 2014 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using MonoDevelop.Core;
using Xwt;
using Xwt.Drawing;
namespace MonoDevelop.PackageManagement
{
internal class ManagePackagesCellView : CanvasCellView
{
int packageIdFontSize;
int packageDescriptionFontSize;
public ManagePackagesCellView ()
{
CellWidth = 260;
BackgroundColor = Styles.CellBackgroundColor;
StrongSelectionColor = Styles.CellStrongSelectionColor;
SelectionColor = Styles.CellSelectionColor;
UseStrongSelectionColor = true;
if (Platform.IsWindows) {
packageIdFontSize = 10;
packageDescriptionFontSize = 9;
} else {
packageIdFontSize = 12;
packageDescriptionFontSize = 11;
}
}
public IDataField<ManagePackagesSearchResultViewModel> PackageField { get; set; }
public IDataField<Image> ImageField { get; set; }
public IDataField<bool> HasBackgroundColorField { get; set; }
public IDataField<double> CheckBoxAlphaField { get; set; }
public double CellWidth { get; set; }
public Color BackgroundColor { get; set; }
public Color StrongSelectionColor { get; set; }
public Color SelectionColor { get; set; }
public bool UseStrongSelectionColor { get; set; }
public event EventHandler<ManagePackagesCellViewEventArgs> PackageChecked;
protected override void OnDraw (Context ctx, Rectangle cellArea)
{
ManagePackagesSearchResultViewModel packageViewModel = GetValue (PackageField);
if (packageViewModel == null) {
return;
}
FillCellBackground (ctx);
UpdateTextColor (ctx);
DrawCheckBox (ctx, packageViewModel, cellArea);
DrawPackageImage (ctx, cellArea);
double packageIdWidth = cellArea.Width - packageDescriptionPadding.HorizontalSpacing - packageDescriptionLeftOffset;
// Package download count.
if (packageViewModel.HasDownloadCount) {
var downloadCountTextLayout = new TextLayout ();
downloadCountTextLayout.Text = packageViewModel.GetDownloadCountOrVersionDisplayText ();
Size size = downloadCountTextLayout.GetSize ();
Point location = new Point (cellArea.Right - packageDescriptionPadding.Right, cellArea.Top + packageDescriptionPadding.Top);
Point downloadLocation = location.Offset (-size.Width, 0);
ctx.DrawTextLayout (downloadCountTextLayout, downloadLocation);
packageIdWidth = downloadLocation.X - cellArea.Left - packageIdRightHandPaddingWidth - packageDescriptionPadding.HorizontalSpacing - packageDescriptionLeftOffset;
}
// Package Id.
// Use the package id and not the package title to prevent a pango crash if the title
// contains Chinese characters.
var packageIdTextLayout = new TextLayout ();
packageIdTextLayout.Font = packageIdTextLayout.Font.WithSize (packageIdFontSize);
packageIdTextLayout.Markup = packageViewModel.GetIdMarkup ();
packageIdTextLayout.Trimming = TextTrimming.WordElipsis;
Size packageIdTextSize = packageIdTextLayout.GetSize ();
packageIdTextLayout.Width = packageIdWidth;
ctx.DrawTextLayout (
packageIdTextLayout,
cellArea.Left + packageDescriptionPadding.Left + packageDescriptionLeftOffset,
cellArea.Top + packageDescriptionPadding.Top);
// Package description.
var descriptionTextLayout = new TextLayout ();
descriptionTextLayout.Font = descriptionTextLayout.Font.WithSize (packageDescriptionFontSize);
descriptionTextLayout.Width = cellArea.Width - packageDescriptionPadding.HorizontalSpacing - packageDescriptionLeftOffset;
descriptionTextLayout.Height = cellArea.Height - packageIdTextSize.Height - packageDescriptionPadding.VerticalSpacing;
descriptionTextLayout.Text = packageViewModel.Summary;
descriptionTextLayout.Trimming = TextTrimming.Word;
ctx.DrawTextLayout (
descriptionTextLayout,
cellArea.Left + packageDescriptionPadding.Left + packageDescriptionLeftOffset,
cellArea.Top + packageIdTextSize.Height + packageDescriptionPaddingHeight + packageDescriptionPadding.Top);
}
void UpdateTextColor (Context ctx)
{
if (Selected) {
ctx.SetColor (Styles.CellTextSelectionColor);
} else {
ctx.SetColor (Styles.CellTextColor);
}
}
void FillCellBackground (Context ctx)
{
if (Selected) {
FillCellBackground (ctx, GetSelectedColor ());
} else if (IsBackgroundColorFieldSet ()) {
FillCellBackground (ctx, BackgroundColor);
}
}
Color GetSelectedColor ()
{
if (UseStrongSelectionColor) {
return StrongSelectionColor;
}
return SelectionColor;
}
bool IsBackgroundColorFieldSet ()
{
return GetValue (HasBackgroundColorField, false);
}
void FillCellBackground (Context ctx, Color color)
{
ctx.Rectangle (BackgroundBounds);
ctx.SetColor (color);
ctx.Fill ();
}
void DrawCheckBox (Context ctx, ManagePackagesSearchResultViewModel packageViewModel, Rectangle cellArea)
{
CreateCheckboxImages ();
Image image = GetCheckBoxImage (packageViewModel.IsChecked);
double alpha = GetCheckBoxImageAlpha ();
ctx.DrawImage (
image,
cellArea.Left + checkBoxPadding.Left,
cellArea.Top + ((cellArea.Height - checkBoxImageSize.Height - 2) / 2),
alpha);
}
void CreateCheckboxImages ()
{
if (whiteCheckedCheckBoxImage != null)
return;
var widget = Toolkit.CurrentEngine.GetNativeWidget (ParentWidget);
var checkbox = new ManagePackagesCellViewCheckBox (ParentWidget.ParentWindow.Screen.ScaleFactor);
checkbox.Container = (Gtk.Widget)widget;
checkbox.Size = (int)checkBoxImageSize.Width + 1;
// White checkbox.
whiteUncheckedCheckBoxImage = checkbox.CreateImage ();
checkbox.Active = true;
whiteCheckedCheckBoxImage = checkbox.CreateImage ();
// Odd numbered checkbox.
checkbox.BackgroundColor = BackgroundColor;
checkedCheckBoxWithBackgroundColorImage = checkbox.CreateImage ();
checkbox.Active = false;
uncheckedCheckBoxWithBackgroundColorImage = checkbox.CreateImage ();
// Grey check box.
checkbox.BackgroundColor = SelectionColor;
greyUncheckedCheckBoxImage = checkbox.CreateImage ();
checkbox.Active = true;
greyCheckedCheckBoxImage = checkbox.CreateImage ();
// Blue check box.
checkbox.BackgroundColor = StrongSelectionColor;
blueCheckedCheckBoxImage = checkbox.CreateImage ();
checkbox.Active = false;
blueUncheckedCheckBoxImage = checkbox.CreateImage ();
}
double GetCheckBoxImageAlpha ()
{
return GetValue (CheckBoxAlphaField, 1);
}
Image GetCheckBoxImage (bool checkBoxActive)
{
if (Selected && UseStrongSelectionColor && checkBoxActive) {
return blueCheckedCheckBoxImage;
} else if (Selected && checkBoxActive) {
return greyCheckedCheckBoxImage;
} else if (Selected && UseStrongSelectionColor) {
return blueUncheckedCheckBoxImage;
} else if (Selected) {
return greyUncheckedCheckBoxImage;
} else if (checkBoxActive && IsBackgroundColorFieldSet ()) {
return checkedCheckBoxWithBackgroundColorImage;
} else if (checkBoxActive) {
return whiteCheckedCheckBoxImage;
} else if (IsBackgroundColorFieldSet ()) {
return uncheckedCheckBoxWithBackgroundColorImage;
} else {
return whiteUncheckedCheckBoxImage;
}
}
void DrawPackageImage (Context ctx, Rectangle cellArea)
{
Image image = GetValue (ImageField);
if (image == null) {
image = defaultPackageImage;
}
if (Selected)
image = image.WithStyles ("sel");
if (PackageImageNeedsResizing (image)) {
Point imageLocation = GetPackageImageLocation (maxPackageImageSize, cellArea);
ctx.DrawImage (
image,
cellArea.Left + packageImagePadding.Left + checkBoxAreaWidth + imageLocation.X,
Math.Round( cellArea.Top + packageImagePadding.Top + imageLocation.Y),
maxPackageImageSize.Width,
maxPackageImageSize.Height);
} else {
Point imageLocation = GetPackageImageLocation (image.Size, cellArea);
ctx.DrawImage (
image,
cellArea.Left + packageImagePadding.Left + checkBoxAreaWidth + imageLocation.X,
Math.Round (cellArea.Top + packageImagePadding.Top + imageLocation.Y));
}
}
bool PackageImageNeedsResizing (Image image)
{
return (image.Width > maxPackageImageSize.Width) || (image.Height > maxPackageImageSize.Height);
}
Point GetPackageImageLocation (Size imageSize, Rectangle cellArea)
{
double width = (packageImageAreaWidth - imageSize.Width) / 2;
double height = (cellArea.Height - imageSize.Height - packageImagePadding.Bottom) / 2;
return new Point (width, height);
}
protected override Size OnGetRequiredSize (SizeConstraint widthConstraint)
{
var layout = new TextLayout ();
layout.Text = "W";
layout.Font = layout.Font.WithSize (packageDescriptionFontSize);
Size size = layout.GetSize ();
return new Size (CellWidth, size.Height * linesDisplayedCount + packageDescriptionPaddingHeight + packageDescriptionPadding.VerticalSpacing);
}
protected override void OnButtonPressed (ButtonEventArgs args)
{
ManagePackagesSearchResultViewModel packageViewModel = GetValue (PackageField);
if (packageViewModel == null) {
base.OnButtonPressed (args);
return;
}
double x = args.X - Bounds.X;
double y = args.Y - Bounds.Y;
if (checkBoxImageClickableRectangle.Contains (x, y)) {
packageViewModel.IsChecked = !packageViewModel.IsChecked;
OnPackageChecked (packageViewModel);
}
}
void OnPackageChecked (ManagePackagesSearchResultViewModel packageViewModel)
{
if (PackageChecked != null) {
PackageChecked (this, new ManagePackagesCellViewEventArgs (packageViewModel));
}
}
const int packageDescriptionPaddingHeight = 5;
const int packageIdRightHandPaddingWidth = 5;
const int linesDisplayedCount = 4;
const int checkBoxAreaWidth = 36;
const int packageImageAreaWidth = 54;
const int packageDescriptionLeftOffset = checkBoxAreaWidth + packageImageAreaWidth + 8;
WidgetSpacing packageDescriptionPadding = new WidgetSpacing (5, 5, 5, 10);
WidgetSpacing packageImagePadding = new WidgetSpacing (0, 0, 0, 5);
WidgetSpacing checkBoxPadding = new WidgetSpacing (10, 0, 0, 10);
Size maxPackageImageSize = new Size (48, 48);
Size checkBoxImageSize = new Size (16, 16);
Rectangle checkBoxImageClickableRectangle = new Rectangle (0, 10, 40, 50);
Image whiteCheckedCheckBoxImage;
Image whiteUncheckedCheckBoxImage;
Image greyCheckedCheckBoxImage;
Image greyUncheckedCheckBoxImage;
Image blueCheckedCheckBoxImage;
Image blueUncheckedCheckBoxImage;
Image checkedCheckBoxWithBackgroundColorImage;
Image uncheckedCheckBoxWithBackgroundColorImage;
static readonly Image defaultPackageImage = Image.FromResource (typeof(ManagePackagesCellView), "package-48.png");
}
}
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