public CappedImagePage ()
{
this.Title = "Capped Image Sample";
Dictionary<string, Thickness> images = new Dictionary<string, Thickness> {
{ "speechbubble.png", new Thickness (21d, 17d, 26.5d, 17.5d) },
{ "speechbubble_fancy_green.png", new Thickness (21f, 14f, 21f, 14f) },
{ "speechbubble_fancy_gray.png", new Thickness (21f, 14f, 21f, 14f) },
{ "button_normal.png", new Thickness (6d, 6d, 6d, 6d) },
{ "button_back.png", new Thickness (13d, 2d, 6d, 2d) },
};
var cappedImage = new CappedImage (images.First().Key, images.First().Value);
cappedImage.HorizontalOptions = LayoutOptions.Start;
var imagePicker = new Picker {
Title = "Image",
HorizontalOptions = LayoutOptions.FillAndExpand,
};
foreach (var item in images) {
imagePicker.Items.Add (item.Key);
}
imagePicker.SelectedIndex = 0;
imagePicker.SelectedIndexChanged += (sender, e) => {
var selectedItem = imagePicker.Items[imagePicker.SelectedIndex];
// Set these in a single call to prevent 2 layout calls (one of which will be a bit weird because the CapWidth won't match the ImageResource
cappedImage.LayoutPaused = true;
cappedImage.ImageResource = selectedItem;
cappedImage.CapWidth = images[selectedItem];
// Ensure we use the correct blend mode(s) for tinting
if (selectedItem == "speechbubble.png")
cappedImage.TintColorMode = TintColorModes.Solid;
else
cappedImage.TintColorMode = TintColorModes.Gradient;
cappedImage.LayoutPaused = false;
};
var flipVerticallySwitch = new Switch { HorizontalOptions = LayoutOptions.End};
var flipHorizontallySwitch = new Switch { HorizontalOptions = LayoutOptions.End};
var colorPicker = new ColorPicker {
HorizontalOptions = LayoutOptions.FillAndExpand
};
colorPicker.SelectedColorChanged += (sender, args) =>
{
cappedImage.TintColor = colorPicker.SelectedColor;
colorPicker.BackgroundColor = colorPicker.SelectedColor;
};
var widthSlider = new Slider {
Minimum = 0d,
Maximum = Application.Current.MainPage.Width-20f,
Value = 100d,
HorizontalOptions = LayoutOptions.EndAndExpand,
};
var heightSlider = new Slider {
Minimum = 0d,
Maximum = Application.Current.MainPage.Height,
Value = 50d,
HorizontalOptions = LayoutOptions.EndAndExpand,
};
var hasShadowSwitch = new Switch { HorizontalOptions = LayoutOptions.End };
this.Content = new ScrollView {
Content = new StackLayout {
Padding = new Thickness (8d, 8d, 8d, 8d),
Spacing = 8d,
Children = {
imagePicker,
new StackLayout {
Orientation = StackOrientation.Horizontal,
Spacing = 16,
Children = {
new Label { Text = "Color", HorizontalOptions = LayoutOptions.Start, YAlign = TextAlignment.Center },
colorPicker,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
new Label {
Text = "Flip Vertically",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
flipVerticallySwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
new Label {
Text = "Flip Horizontally",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
flipHorizontallySwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
new Label {
Text = "Has Shadow",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
hasShadowSwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
new Label { Text = "Width", HorizontalOptions = LayoutOptions.StartAndExpand, YAlign = TextAlignment.Center },
widthSlider,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
new Label { Text = "Height", HorizontalOptions = LayoutOptions.StartAndExpand, YAlign = TextAlignment.Center },
heightSlider,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children = {
cappedImage,
new BoxView {
HorizontalOptions = LayoutOptions.EndAndExpand,
},
}
}
},
}
};
cappedImage.SetBinding(CappedImage.FlippedHorizontallyProperty, new Binding("IsToggled", BindingMode.OneWay, source:flipHorizontallySwitch));
cappedImage.SetBinding(CappedImage.FlippedVerticallyProperty, new Binding("IsToggled", BindingMode.OneWay, source:flipVerticallySwitch));
cappedImage.SetBinding(CappedImage.HasShadowProperty, new Binding("IsToggled", BindingMode.OneWay, source:hasShadowSwitch));
cappedImage.SetBinding(CappedImage.WidthRequestProperty, new Binding("Value", BindingMode.TwoWay, source:widthSlider));
cappedImage.SetBinding(CappedImage.HeightRequestProperty, new Binding("Value", BindingMode.TwoWay, source:heightSlider));
}
private UIImage CreateUIImage(CappedImage cappedImage)
{
return(ImageHelper.CreateCappedUIImage(cappedImage.ImageResource, cappedImage.FlippedHorizontally, cappedImage.FlippedVertically, cappedImage.TintColor, cappedImage.TintColorMode, cappedImage.CapWidth));
}
public CappedImagePage()
{
this.Title = "Capped Image Sample";
Dictionary <string, Thickness> images = new Dictionary <string, Thickness> {
{ "speechbubble.png", new Thickness(21d, 17d, 26.5d, 17.5d) },
{ "speechbubble_fancy_green.png", new Thickness(21f, 14f, 21f, 14f) },
{ "speechbubble_fancy_gray.png", new Thickness(21f, 14f, 21f, 14f) },
{ "button_normal.png", new Thickness(6d, 6d, 6d, 6d) },
{ "button_back.png", new Thickness(13d, 2d, 6d, 2d) },
};
var cappedImage = new CappedImage(images.First().Key, images.First().Value);
cappedImage.HorizontalOptions = LayoutOptions.Start;
var imagePicker = new Picker {
Title = "Image",
HorizontalOptions = LayoutOptions.FillAndExpand,
};
foreach (var item in images)
{
imagePicker.Items.Add(item.Key);
}
imagePicker.SelectedIndex = 0;
imagePicker.SelectedIndexChanged += (sender, e) => {
var selectedItem = imagePicker.Items[imagePicker.SelectedIndex];
// Set these in a single call to prevent 2 layout calls (one of which will be a bit weird because the CapWidth won't match the ImageResource
cappedImage.LayoutPaused = true;
cappedImage.ImageResource = selectedItem;
cappedImage.CapWidth = images[selectedItem];
// Ensure we use the correct blend mode(s) for tinting
if (selectedItem == "speechbubble.png")
{
cappedImage.TintColorMode = TintColorModes.Solid;
}
else
{
cappedImage.TintColorMode = TintColorModes.Gradient;
}
cappedImage.LayoutPaused = false;
};
var flipVerticallySwitch = new Switch {
HorizontalOptions = LayoutOptions.End
};
var flipHorizontallySwitch = new Switch {
HorizontalOptions = LayoutOptions.End
};
var colorPicker = new ColorPicker {
HorizontalOptions = LayoutOptions.FillAndExpand
};
colorPicker.SelectedColorChanged += (sender, args) =>
{
cappedImage.TintColor = colorPicker.SelectedColor;
colorPicker.BackgroundColor = colorPicker.SelectedColor;
};
var widthSlider = new Slider {
Minimum = 0d,
Maximum = Application.Current.MainPage.Width - 20f,
Value = 100d,
HorizontalOptions = LayoutOptions.EndAndExpand,
};
var heightSlider = new Slider {
Minimum = 0d,
Maximum = Application.Current.MainPage.Height,
Value = 50d,
HorizontalOptions = LayoutOptions.EndAndExpand,
};
var hasShadowSwitch = new Switch {
HorizontalOptions = LayoutOptions.End
};
this.Content = new ScrollView {
Content = new StackLayout {
Padding = new Thickness(8d, 8d, 8d, 8d),
Spacing = 8d,
Children =
{
imagePicker,
new StackLayout {
Orientation = StackOrientation.Horizontal,
Spacing = 16,
Children =
{
new Label {
Text = "Color", HorizontalOptions = LayoutOptions.Start, YAlign = TextAlignment.Center
},
colorPicker,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Flip Vertically",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
flipVerticallySwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Flip Horizontally",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
flipHorizontallySwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Has Shadow",
HorizontalOptions = LayoutOptions.StartAndExpand,
YAlign = TextAlignment.Center
},
hasShadowSwitch,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Width", HorizontalOptions = LayoutOptions.StartAndExpand, YAlign = TextAlignment.Center
},
widthSlider,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Height", HorizontalOptions = LayoutOptions.StartAndExpand, YAlign = TextAlignment.Center
},
heightSlider,
},
},
new StackLayout {
Orientation = StackOrientation.Horizontal,
Children =
{
cappedImage,
new BoxView {
HorizontalOptions = LayoutOptions.EndAndExpand,
},
}
}
},
}
};
cappedImage.SetBinding(CappedImage.FlippedHorizontallyProperty, new Binding("IsToggled", BindingMode.OneWay, source: flipHorizontallySwitch));
cappedImage.SetBinding(CappedImage.FlippedVerticallyProperty, new Binding("IsToggled", BindingMode.OneWay, source: flipVerticallySwitch));
cappedImage.SetBinding(CappedImage.HasShadowProperty, new Binding("IsToggled", BindingMode.OneWay, source: hasShadowSwitch));
cappedImage.SetBinding(CappedImage.WidthRequestProperty, new Binding("Value", BindingMode.TwoWay, source: widthSlider));
cappedImage.SetBinding(CappedImage.HeightRequestProperty, new Binding("Value", BindingMode.TwoWay, source: heightSlider));
}
