hello I write code which gives the drive list, capacity and free size the drives. I want to draw pie graphics according to size of each drive, like this:
Here is the code I have so far - The size values are in the freeSize and fullSize variables
string[] drivers = new string[5];
int freeSize;
int fullSize;
private void Form1_Load(object sender, EventArgs e)
{
foreach (var item in System.IO.Directory.GetLogicalDrives())
{
int i = 0;
drivers[i] = item;
comboBox1.Items.Add(drivers[i]);
++i;
}
}
private void btnSorgula_Click(object sender, EventArgs e)
{
string a = comboBox1.Items[comboBox1.SelectedIndex].ToString();
System.IO.DriveInfo di = new System.IO.DriveInfo(a);
if (!di.IsReady)
{
MessageBox.Show("not ready");
return;
}
decimal freeByt= Convert.ToDecimal(di.TotalFreeSpace);
decimal freeGb = freeByt / (1024 * 1024*1024);
label1.Text = freeGb.ToString();
freeSize = Convert.ToInt32(freeGb);
decimal totalByt = Convert.ToDecimal(di.TotalSize);
decimal tottalGb = totalByt / (1024 * 1024 * 1024);
label2.Text = Convert.ToString(tottalGb);
fullSize = Convert.ToInt32(tottalGb);
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
Rectangle rect = new Rectangle(10, 10, 100, 100);
g.FillPie(Brushes.Black, rect, fullSize, fullSize / freeSize);
g.FillPie(Brushes.RoyalBlue, rect, 140, 100);
}
How about this one:
private Image GetCake(int width, int height, double percentage)
{
var bitmap = new Bitmap(width, height);
using (var g = Graphics.FromImage(bitmap))
{
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.FillEllipse(Brushes.DarkMagenta, 1, 9, width - 2, height - 10);
g.DrawEllipse(Pens.Black, 1, 9, width - 2, height - 10);
g.FillPie(Brushes.DarkBlue, 1, 9, width - 2, height - 10, 0, (int)(360 * percentage));
g.DrawPie(Pens.Black, 1, 9, width - 2, height - 10, 0, (int)(360 * percentage));
g.FillEllipse(Brushes.Magenta, 1, 1, width - 2, height - 10);
g.DrawEllipse(Pens.Black, 1, 1, width - 2, height - 10);
g.FillPie(Brushes.Blue, 1, 1, width - 2, height - 10, 0, (int)(360 * percentage));
g.DrawPie(Pens.Black, 1, 1, width - 2, height - 10, 0, (int)(360 * percentage));
g.DrawArc(Pens.Blue, 1, 1, width - 2, height - 10, 0, (int)(360 * percentage));
}
return bitmap;
}
You could call it with:
myPictureBox.Image = GetCake(myPictureBox.Width, myPictureBox.Height, 0.4);
The 0.4 means 40%. So fill in any value between 0 and 1 to set the desired percentage.
The problem with your code is that Form1_Paint is called when ever the form is drawn, e.g. right after start up when it is first shown. At that point of time the button has not yet been clicked and freeSize therefore is 0.
To fix the problem, change the code so that it only paints when the button has been clicked at least once.
Related
I have this little code to use AddArc() method in a label, but when I execute the code the label disappears. I believe it is the numbers I have used, I followed instructions from the Windows documentation and it had these parameters there too.
GraphicsPath gp = new GraphicsPath();
Rectangle rec = new Rectangle(20, 20, 50, 100);
gp.AddArc(rec, 0 , 180);
label2.Region = new Region(gp);
label2.Invalidate();
I used another code to make the correct way or curve in a text
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var center = new Point(Width / 2, Height / 2);
var radius = Math.Min(Width, Height) / 3;
var text = "Hello";//txtUp.Text;
var font = new Font(FontFamily.GenericSansSerif, 24, FontStyle.Bold);
for (var i = 0; i < text.Length; ++i)
{
var c = new String(text[i], 1);
var size = e.Graphics.MeasureString(c, font);
var charRadius = radius + size.Height;
var angle = (((float)i / text.Length) - 2);
var x = (int)(center.X + Math.Cos(angle) * charRadius);
var y = (int)(center.Y + Math.Sin(angle) * charRadius);
e.Graphics.TranslateTransform(x, y);
e.Graphics.RotateTransform((float)(90 + 360 * angle / (2 * Math.PI)));
e.Graphics.DrawString(c, font, Brushes.Red, 0, 0);
e.Graphics.ResetTransform();
e.Graphics.DrawArc(new Pen(Brushes.Transparent, 2.0f), center.X - radius, center.Y - radius, radius * 2, radius * 2, 0, 360);
}
}
but it wont show in front of a panel is it possible.
This is what it looks like:
Is it possible to move that text in front of the green circle?
I am trying to make a Bitmap image to represent a block of one hour and show red as worked time and white as non-worked showing in periods of 10 minutes intervals. I am trying to get the result to look like below:
Any help or guidance would be greater appreciated. In the code below Tuple<int,DateTime>> the int is time block example 0,1,2,3.....21,22,23,24 and DateTime will hold the time worked.
public void DrawPeriod(IGrouping<int, Tuple<int, DateTime>> worked)
{
var bitmap = new Bitmap(640, 480);
for (var x = 0; x < bitmap.Width; x++)
{
for (var y = 0; y < bitmap.Height; y++)
{
bitmap.SetPixel(x, y, Color.Red);
}
}
bitmap.Save("worked.bmp");
}
Sorry I can't give a sample with the data you needed. But you can do it something like this. This can be achieved by using System.Drawing.Graphics.
var sampleData = new int[] { 1, 2, 3, 13, 4, 5, 6, 12, 7, 8, 9 };
var bitmapHeight = 250;
var barWidth = 50;
var bitmap = new Bitmap(sampleData.Length * barWidth, bitmapHeight);
int currentX = 1;
foreach (var item in sampleData)
{
var result = item % 2;
Brush brush;
if (result == 0)
{
brush = Brushes.Red;
}
else
{
brush = Brushes.White;
}
using (Graphics graphics = Graphics.FromImage(bitmap))
{
var rectangle = new Rectangle(currentX, 0, barWidth, bitmapHeight);
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.FillRectangle(brush, rectangle);
// Set Text
Font drawFont = new Font("Arial", 16);
SolidBrush drawBrush = new SolidBrush(Color.Black);
graphics.DrawString(item.ToString(), drawFont, drawBrush, currentX + 15, bitmapHeight / 2);
}
currentX = currentX + 50;
}
// Border
using (Graphics graphics = Graphics.FromImage(bitmap))
{
graphics.DrawRectangle(new Pen(Brushes.Black, 5), new Rectangle(0, 0, bitmap.Width, bitmap.Height));
}
bitmap.Save(FileName);
Sample Output
I am using netDXF (https://netdxf.codeplex.com/) to generate a DXF file for use with AutoCAD. However, I have an issue with getting the width of MText correct. I want to be able to define a width that the text should fit into, and change the width factor of the text (squash it horizontally) so that it fits in the defined area. So if I have a 40mm width to fit the text into and the text is 80mm long, it needs to have a width factor of 0.5. The only problem is that I don't know how to accurately determine the width of the text. I have tried the following methods and was unsuccessful in getting the correct result:
Why is Graphics.MeasureString() returning a higher than expected number?
Measure a String without using a Graphics object?
http://www.codeproject.com/Articles/2118/Bypass-Graphics-MeasureString-limitations
I have attached my code. I am basically printing a horizontal line using each of the 3 methods to calculate text width and comparing it to the actual text width. If I change the font, I get varying results. I have attached two images. One using the code with Calibri and one with Arial. I need the line to be on the edges of the text no matter what font I use.
Here is my code:
public void TestMethod1()
{
Application.SetCompatibleTextRenderingDefault(false);
//text width in mm
float textWidth = 40;
float textHeight = 200;
string labelText = "HELLO WORLD!";
TextStyle textStyle = new TextStyle("Calibri");
DxfDocument dxf = new DxfDocument();
Layer layer1 = new Layer("layer1");
layer1.Color = new AciColor(0, 0, 255);
layer1.Name = "Text";
MText text1 = new MText(new Vector2(0, 0), textHeight, 0, textStyle);
text1.Layer = layer1;
text1.AttachmentPoint = MTextAttachmentPoint.MiddleCenter;
//Will the text fit in the bounds of the rectangle? If not change width factor so it does.
Font f = new Font(textStyle.FontName, textHeight);
Size size = TextRenderer.MeasureText(labelText, f);
SizeF sizeF = graphicsMeasureString(labelText, f);
int width = MeasureDisplayStringWidth(labelText, f);
float widthFactor = Math.Min(1, textWidth / sizeF.Width);
MTextFormattingOptions mtextOptions = new MTextFormattingOptions(text1.Style);
//mtextOptions.WidthFactor = widthFactor;
text1.Write(labelText, mtextOptions);
//Red, g.MeasureString
Line line1 = new Line(new Vector2(0 - sizeF.Width / 2, 0), new Vector2(0 + sizeF.Width / 2, 0));
line1.Color = new AciColor(255, 0, 0);
//Green, TextRenderer
Line line2 = new Line(new Vector2(0 - size.Width / 2, 5), new Vector2(0 + size.Width / 2, 5));
line2.Color = new AciColor(0, 255, 0);
//Yellow, MeasureDisplayStringWidth
Line line3 = new Line(new Vector2(0 - width / 2, -5), new Vector2(0 + width / 2, -5));
line3.Color = new AciColor(255, 255, 0);
dxf.AddEntity(text1);
dxf.AddEntity(line1);
dxf.AddEntity(line2);
dxf.AddEntity(line3);
dxf.Save("Text Width Test.dxf");
}
public SizeF graphicsMeasureString(string text, Font f)
{
Bitmap fakeImage = new Bitmap(1, 1);
Graphics g = Graphics.FromImage(fakeImage);
SizeF sizeF = g.MeasureString(text, f, new PointF(100, 0), StringFormat.GenericTypographic);
return sizeF;
}
public int MeasureDisplayStringWidth(string text, Font f)
{
Size size = TextRenderer.MeasureText(text, f);
Bitmap fakeImage = new Bitmap(1, 1);
Graphics g = Graphics.FromImage(fakeImage);
System.Drawing.StringFormat format = new System.Drawing.StringFormat();
System.Drawing.RectangleF rect = new System.Drawing.RectangleF(0, 0, 1000, 1000);
System.Drawing.CharacterRange[] ranges = { new System.Drawing.CharacterRange(0, text.Length) };
System.Drawing.Region[] regions = new System.Drawing.Region[1];
format.SetMeasurableCharacterRanges(ranges);
regions = g.MeasureCharacterRanges(text, f, rect, format);
rect = regions[0].GetBounds(g);
return (int)(rect.Right + 1.0f);
}
hello how to fill lineargradientbrush on the graphicspath..
i have this code and solidbrush can only fill it.. i dont know how to fill it with lineargradientbrush.. any help please..
i have this code..
class KamoteButton : Button
{
protected override void OnPaint(PaintEventArgs pevent)
{
int width = this.Width-1;
int height = this.Height-1;
Color gradColor_a = Color.FromArgb(162, 177, 183);
Color gradColor_b = Color.FromArgb(104, 111, 114);
int radius = this.Width / 8;
Graphics gFx = pevent.Graphics;
gFx.SmoothingMode = SmoothingMode.AntiAlias;
GraphicsPath gp = new GraphicsPath();
gp.AddArc(0, 0, radius, radius, 180, 90);
gp.AddLine(width / 8, 0, width - width / 8, 0);
gp.AddArc(width - radius, 0, radius, radius, 270, 90);
gp.AddLine(width, width / 8, width, height - width / 8);
gp.AddArc(width - radius, height - radius, radius, radius, 0, 90);
gp.AddLine(width - width / 8, height, width / 8, height);
gp.AddArc(0, height - radius, radius, radius, 90, 90);
gp.AddLine(0, height - width / 8, 0, width / 8);
Rectangle r = new Rectangle(0, 0, 100, 100);
LinearGradientBrush lbg = new LinearGradientBrush(gp, gradColor_a, gradColor_b, LinearGradientMode.Vertical);
SolidBrush sb = new SolidBrush(Color.Red);
gFx.FillPath(lbg, gp);
this.Region = new Region(gp);
}
}
Your code to create the GradientBrushh won't compile:
LinearGradientBrush lbg = new LinearGradientBrush(gp,
gradColor_a, gradColor_b, LinearGradientMode.Vertical);
There is no constructor with a Path as parameter. Replace it with 2 points or 1 Rect
I am using the code below to change to shape of the winform.
It's changing the shape, but not like how I wanted.
I need the form to have curved corners.
What points should I use to get it?
public void MakeNonRectangularForm()
{
var p = new GraphicsPath();
int width = ClientSize.Width;
int height = ClientSize.Height;
p.AddClosedCurve(new Point[] { new Point(width / 2, height / 2),
new Point(width, 0), new Point(width, height / 3),
new Point(width - width / 3, height),
new Point(width / 7, height - height / 8)});
Region = new Region(p);
}
The following is some code I have used to create rounded edges before, using AddArc and lines to piece together the border:
(You can play with xRadius and yRadius to achieve your desired amount of "rounded-ness")
int xRadius = {insert value here};
int yRadius = {insert value here};
GraphicsPath edge = new GraphicsPath();
int rightHandLeft = this.Width - xRadius - 1;
int bottomSideTop = this.Height - yRadius - 1;
edge.AddArc(0, 0, xRadius, yRadius, 180, 90);
edge.AddLine(xRadius, 0, rightHandLeft, 0);
edge.AddArc(rightHandLeft, 0, xRadius, yRadius, 270, 90);
edge.AddLine(this.Width, yRadius, this.Width, bottomSideTop);
edge.AddArc(rightHandLeft, bottomSideTop, xRadius, yRadius, 0, 90);
edge.AddLine(rightHandLeft, this.Height, xRadius, this.Height);
edge.AddArc(0, bottomSideTop, xRadius, yRadius, 90, 90);
edge.AddLine(0, bottomSideTop, 0, yRadius);
this.Region = new Region(edge);