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Calculate text height with max size / WordBreak #1

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18 changes: 11 additions & 7 deletions FlexibleMessageBox/FlexibleMessageBox.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -566,20 +566,24 @@ private static void SetDialogSizes(FlexibleMessageBoxForm flexibleMessageBoxForm
var stringRows = GetStringRows(text);
if (stringRows == null) return;

//Calculate whole text height
var textHeight = TextRenderer.MeasureText(text, FONT).Height;
//Calculate margins
var marginWidth = flexibleMessageBoxForm.Width - flexibleMessageBoxForm.richTextBoxMessage.Width;
var marginHeight = flexibleMessageBoxForm.Height - flexibleMessageBoxForm.richTextBoxMessage.Height;

flexibleMessageBoxForm.richTextBoxMessage.MaximumSize = new Size(flexibleMessageBoxForm.MaximumSize.Width - marginWidth,
flexibleMessageBoxForm.MaximumSize.Height - marginHeight);

//Calculate whole text height considering maximum size for richTextBoxMessage and WordBreak
TextFormatFlags textFormatFlags = new TextFormatFlags();
textFormatFlags |= TextFormatFlags.WordBreak;
var textHeight = TextRenderer.MeasureText(text, FONT, flexibleMessageBoxForm.richTextBoxMessage.MaximumSize, textFormatFlags).Height;

//Calculate width for longest text line
const int SCROLLBAR_WIDTH_OFFSET = 15;
var longestTextRowWidth = stringRows.Max(textForRow => TextRenderer.MeasureText(textForRow, FONT).Width);
var captionWidth = TextRenderer.MeasureText(caption, SystemFonts.CaptionFont).Width;
var textWidth = Math.Max(longestTextRowWidth + SCROLLBAR_WIDTH_OFFSET, captionWidth);

//Calculate margins
var marginWidth = flexibleMessageBoxForm.Width - flexibleMessageBoxForm.richTextBoxMessage.Width;
var marginHeight = flexibleMessageBoxForm.Height - flexibleMessageBoxForm.richTextBoxMessage.Height;
int magicAdd = 12;
marginHeight += magicAdd;
//Set calculated dialog size (if the calculated values exceed the maximums, they were cut by windows forms automatically)
flexibleMessageBoxForm.Size = new Size(textWidth + marginWidth,
textHeight + marginHeight);
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10 changes: 10 additions & 0 deletions FlexibleMessageBoxDemo/Form1.Designer.cs
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12 changes: 12 additions & 0 deletions FlexibleMessageBoxDemo/Form1.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,18 @@ private void btnOneLine_Click(object sender, EventArgs e)
MessageBoxIcon.Information);
}

private void buttonLongLine_Click(object sender, EventArgs e)
{
double MAX_WIDTH_FACTOR_start = FlexibleMessageBox.MAX_WIDTH_FACTOR;
FlexibleMessageBox.MAX_WIDTH_FACTOR = 0.3f;
FlexibleMessageBox.Show(this,
"MyApp v1.0.1 this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - this is a long line message - ",
"MyApp",
MessageBoxButtons.OK,
MessageBoxIcon.Information);
FlexibleMessageBox.MAX_WIDTH_FACTOR = MAX_WIDTH_FACTOR_start;
}

private void button3_Click(object sender, EventArgs e)
{
}
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34 changes: 29 additions & 5 deletions FlexibleMessageBoxDemo/Form1.resx
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Original file line number Diff line number Diff line change
Expand Up @@ -141,7 +141,7 @@
<value>$this</value>
</data>
<data name="&gt;&gt;button1.ZOrder" xml:space="preserve">
<value>4</value>
<value>5</value>
</data>
<data name="button2.Location" type="System.Drawing.Point, System.Drawing">
<value>392, 132</value>
Expand All @@ -165,7 +165,7 @@
<value>$this</value>
</data>
<data name="&gt;&gt;button2.ZOrder" xml:space="preserve">
<value>3</value>
<value>4</value>
</data>
<data name="btnNormal.Location" type="System.Drawing.Point, System.Drawing">
<value>64, 64</value>
Expand All @@ -189,7 +189,7 @@
<value>$this</value>
</data>
<data name="&gt;&gt;btnNormal.ZOrder" xml:space="preserve">
<value>2</value>
<value>3</value>
</data>
<data name="btnOneLine.Location" type="System.Drawing.Point, System.Drawing">
<value>190, 64</value>
Expand All @@ -213,7 +213,7 @@
<value>$this</value>
</data>
<data name="&gt;&gt;btnOneLine.ZOrder" xml:space="preserve">
<value>1</value>
<value>2</value>
</data>
<data name="button3.Location" type="System.Drawing.Point, System.Drawing">
<value>502, 132</value>
Expand All @@ -237,6 +237,30 @@
<value>$this</value>
</data>
<data name="&gt;&gt;button3.ZOrder" xml:space="preserve">
<value>1</value>
</data>
<data name="buttonLongLine.Location" type="System.Drawing.Point, System.Drawing">
<value>301, 64</value>
</data>
<data name="buttonLongLine.Size" type="System.Drawing.Size, System.Drawing">
<value>261, 23</value>
</data>
<data name="buttonLongLine.TabIndex" type="System.Int32, mscorlib">
<value>0</value>
</data>
<data name="buttonLongLine.Text" xml:space="preserve">
<value>Long Line with MAX_WIDTH_FACTOR=0.3</value>
</data>
<data name="&gt;&gt;buttonLongLine.Name" xml:space="preserve">
<value>buttonLongLine</value>
</data>
<data name="&gt;&gt;buttonLongLine.Type" xml:space="preserve">
<value>System.Windows.Forms.Button, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
</data>
<data name="&gt;&gt;buttonLongLine.Parent" xml:space="preserve">
<value>$this</value>
</data>
<data name="&gt;&gt;buttonLongLine.ZOrder" xml:space="preserve">
<value>0</value>
</data>
<metadata name="$this.Localizable" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
Expand All @@ -249,7 +273,7 @@
<value>659, 336</value>
</data>
<data name="$this.Font" type="System.Drawing.Font, System.Drawing">
<value>Meiryo UI, 9pt</value>
<value>Microsoft Sans Serif, 9pt</value>
</data>
<data name="$this.Text" xml:space="preserve">
<value>Form1</value>
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