internal static void CreateBackgroundImage(
ref TemporaryBitmapFile bmpFile,
String controlID,
String title,
String message,
bool infoMode,
int controlWidth
) {
// Really, anything this small is not practically going to
// show readable text. Truncate instead of trying to display
// the string vertically.
if(controlWidth < 75)
{
controlWidth = 75;
}
Bitmap errorIcon = infoMode? GenericUI.InfoIcon : GenericUI.ErrorIcon;
bool showMessage = message != null && message.Length != 0;
bool showTitle = (title != null && title.Length != 0)
|| (controlID != null && controlID.Length != 0);
Debug.Assert(showMessage || showTitle);
//
using(
Font normalFont = new Font(_fontFamily, 8, FontStyle.Regular),
boldFont = new Font(normalFont.FontFamily, 8, FontStyle.Bold)
) {
using(
Brush controlTextBrush = new SolidBrush(SystemColors.ControlText),
controlDarkBrush = new SolidBrush(SystemColors.ControlDark),
controlBrush = new SolidBrush(SystemColors.Control),
windowBrush = new SolidBrush(SystemColors.Window)
) {
using(
Pen controlDarkPen = new Pen(SystemColors.ControlDark),
windowPen = new Pen(SystemColors.Window)
) {
int barHeight = 0;
if(showTitle)
{
// We do not measure the height of the real title because
// we inted to truncate rather than wrap.
barHeight = GetHeight(
"'",
normalFont,
(controlWidth - 30)
) + 6;
}
int messageHeight = 0;
if(showMessage)
{
int textHeight = GetHeight(
message,
normalFont,
(controlWidth - 30)
);
messageHeight = (textHeight < (errorIcon.Height + 6)) ?
(errorIcon.Height + 6) : textHeight + 3;
}
int width = 500; // normally only 300px visible.
int height = barHeight + messageHeight;
Bitmap bitmap = new Bitmap(width, height);
using(Graphics g = Graphics.FromImage(bitmap))
{
if (showTitle)
{
// The rectangle area
g.FillRectangle(controlBrush, 0, 0, width, barHeight);
// The gray line below the controlID
g.DrawLine(controlDarkPen, 0, barHeight - 1, width, barHeight - 1);
// Draw the text "controlTypeName - controlID"
g.DrawString(controlID, boldFont, controlTextBrush, 2, 2);
if(title != null && title.Length > 0)
{
int strPelLen = (int) g.MeasureString(controlID, boldFont).Width;
g.DrawString(" - " + title, normalFont, controlTextBrush, 4 + strPelLen, 2);
}
}
if (showMessage)
{
// The transparent line between controlID and errormessage.
g.DrawLine(windowPen, 0, barHeight, width, barHeight);
// The message rectangle area
g.FillRectangle(controlDarkBrush, 0, barHeight + 1, width, messageHeight - 1);
// Draw the message text
g.DrawString(message, normalFont, windowBrush,
new RectangleF(20, barHeight + 1, controlWidth - 30, messageHeight - 1));
// Draw the icon
g.DrawImage(errorIcon, 2, barHeight + 3);
}
if(bmpFile == null)
{
bmpFile = new TemporaryBitmapFile(bitmap);
}
else
{
bmpFile.UnderlyingBitmap = bitmap;
}
} // using g
}}} // using Fonts, Brushes, and Pens
}
/// <summary>
/// <para>
/// Disposes of the resources (other than memory) used by the
/// <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>.
/// </para>
/// </summary>
/// <remarks>
/// <para>
/// Call <see langword='Dispose'/> when
/// you are finished using the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>. The <see langword='Dispose'/> method leaves the <see cref='System.Web.UI.Design.WebControls.DataListDesigner'/> in an unusable state. After
/// calling <see langword='Dispose'/>, you must release all
/// references to the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> so the memory it was occupying
/// can be reclaimed by garbage collection.
/// </para>
/// <note type="note">
/// Always call <see langword='Dispose'/> before you release your last reference to
/// the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/>. Otherwise, the resources
/// the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> is using will not be freed
/// until garbage collection calls the <see cref='System.Web.UI.Design.MobileControls.ListDesigner'/> object's
/// destructor.
/// </note>
/// </remarks>
/// <seealso cref='System.ComponentModel.Design.IDesigner'/>
protected override void Dispose(bool disposing)
{
if (disposing && _tempBmpFile != null)
{
_tempBmpFile.Dispose();
_cachedWbmpUri = null;
_tempBmpFile = null;
}
base.Dispose(disposing);
}
private String GetConvertedImageURI(String imageUriString)
{
Uri baseUri = new Uri(BaseUrl);
Uri imageUri = new Uri(baseUri, imageUriString);
String extension = Path.GetExtension(imageUriString);
if(extension.Equals(".wbmp"))
{
if(_tempBmpFile != null)
{
if(_cachedWbmpUri != null
&& _cachedWbmpUri.Equals(imageUri))
{
return _tempBmpFile.Url;
}
else
{
_tempBmpFile.Dispose();
_tempBmpFile = null;
_cachedWbmpUri = null;
}
}
Byte[] buffer = FileReader.Read(imageUri);
if(buffer == null)
{
// Could not read image from URI, return original URI to
// Trident and let it render as a broken image.
goto ConversionError;
}
Bitmap bitmap = WbmpConverter.Convert(buffer);
if(bitmap == null)
{
// .wbmp appears to be corrupt, return original URI to
// Trident and let it render as a broken image.
goto ConversionError;
}
_tempBmpFile = new TemporaryBitmapFile(bitmap);
imageUriString = _tempBmpFile.Url;
_cachedWbmpUri = imageUri;
}
ConversionError:
return imageUriString;
}
internal static void CreateBackgroundImage(
ref TemporaryBitmapFile bmpFile,
String controlID,
String title,
String message,
bool infoMode,
int controlWidth
)
{
// Really, anything this small is not practically going to
// show readable text. Truncate instead of trying to display
// the string vertically.
if (controlWidth < 75)
{
controlWidth = 75;
}
Bitmap errorIcon = infoMode? GenericUI.InfoIcon : GenericUI.ErrorIcon;
bool showMessage = message != null && message.Length != 0;
bool showTitle = (title != null && title.Length != 0) ||
(controlID != null && controlID.Length != 0);
Debug.Assert(showMessage || showTitle);
//
using (
Font normalFont = new Font(_fontFamily, 8, FontStyle.Regular),
boldFont = new Font(normalFont.FontFamily, 8, FontStyle.Bold)
) {
using (
Brush controlTextBrush = new SolidBrush(SystemColors.ControlText),
controlDarkBrush = new SolidBrush(SystemColors.ControlDark),
controlBrush = new SolidBrush(SystemColors.Control),
windowBrush = new SolidBrush(SystemColors.Window)
) {
using (
Pen controlDarkPen = new Pen(SystemColors.ControlDark),
windowPen = new Pen(SystemColors.Window)
) {
int barHeight = 0;
if (showTitle)
{
// We do not measure the height of the real title because
// we inted to truncate rather than wrap.
barHeight = GetHeight(
"'",
normalFont,
(controlWidth - 30)
) + 6;
}
int messageHeight = 0;
if (showMessage)
{
int textHeight = GetHeight(
message,
normalFont,
(controlWidth - 30)
);
messageHeight = (textHeight < (errorIcon.Height + 6)) ?
(errorIcon.Height + 6) : textHeight + 3;
}
int width = 500; // normally only 300px visible.
int height = barHeight + messageHeight;
Bitmap bitmap = new Bitmap(width, height);
using (Graphics g = Graphics.FromImage(bitmap))
{
if (showTitle)
{
// The rectangle area
g.FillRectangle(controlBrush, 0, 0, width, barHeight);
// The gray line below the controlID
g.DrawLine(controlDarkPen, 0, barHeight - 1, width, barHeight - 1);
// Draw the text "controlTypeName - controlID"
g.DrawString(controlID, boldFont, controlTextBrush, 2, 2);
if (title != null && title.Length > 0)
{
int strPelLen = (int)g.MeasureString(controlID, boldFont).Width;
g.DrawString(" - " + title, normalFont, controlTextBrush, 4 + strPelLen, 2);
}
}
if (showMessage)
{
// The transparent line between controlID and errormessage.
g.DrawLine(windowPen, 0, barHeight, width, barHeight);
// The message rectangle area
g.FillRectangle(controlDarkBrush, 0, barHeight + 1, width, messageHeight - 1);
// Draw the message text
g.DrawString(message, normalFont, windowBrush,
new RectangleF(20, barHeight + 1, controlWidth - 30, messageHeight - 1));
// Draw the icon
g.DrawImage(errorIcon, 2, barHeight + 3);
}
if (bmpFile == null)
{
bmpFile = new TemporaryBitmapFile(bitmap);
}
else
{
bmpFile.UnderlyingBitmap = bitmap;
}
} // using g
}
}
} // using Fonts, Brushes, and Pens
}