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allow resizing the crop box by dragging handles

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This commit is contained in:
Colin McMillen 2023-09-15 01:42:01 -04:00
parent d72b804b92
commit 4cd0d4efc6
1 changed files with 42 additions and 7 deletions
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49
Program.cs
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@ -122,10 +122,12 @@ public class ViewTool : ITool {
public class CropTool : ITool {
enum Mode { Sizing, Translating };
Photo photo;
Vector2i mouseDragStart;
Vector2i mouseDragEnd;
bool dragging;
Mode mode;
string status = "";
public CropTool(Photo photo) {
@ -138,15 +140,38 @@ public class CropTool : ITool {
Vector2i mousePosition = (Vector2i) mouse.Position;
Vector2i imagePosition = transform.ScreenToImage(mousePosition);
List<Vector2i> corners = Util.RectangleCorners(photo.CropRectangle);
Vector2i? oppositeCorner = null;
bool mouseNearHandle = false;
for (int i = 0; i < 4; i++) {
Vector2i corner = corners[i];
Vector2i handlePosition = transform.ImageToScreen(corner.X, corner.Y);
if (Vector2i.Subtract(mousePosition, handlePosition).ManhattanLength < 10) {
mouseNearHandle = true;
oppositeCorner = corners[(i + 2) % 4];
break;
}
}
bool mouseInRectangle = photo.CropRectangle.Contains(imagePosition.X, imagePosition.Y);
if (mouse.IsButtonPressed(MouseButton.Button1)) {
dragging = mouseInRectangle;
if (mouseNearHandle || !mouseInRectangle) {
mode = Mode.Sizing;
} else {
mode = Mode.Translating;
}
}
if (mouseNearHandle) {
game.Cursor = MouseCursor.Hand;
} else if (mouseInRectangle) {
game.Cursor = MouseCursor.Default;
} else {
game.Cursor = MouseCursor.Crosshair;
}
game.Cursor = mouseInRectangle ? MouseCursor.Default : MouseCursor.Crosshair;
if (!dragging) {
if (mode == Mode.Sizing) {
if (mouse.IsButtonPressed(MouseButton.Button1)) {
mouseDragStart = imagePosition;
mouseDragStart = oppositeCorner ?? imagePosition;
}
if (mouse.IsButtonDown(MouseButton.Button1)) {
mouseDragEnd = imagePosition;
@ -297,6 +322,16 @@ public static class Util {
return new Box2i(left, top, left + width, top + height);
}
// resulting items are ordered such that a corner's opposite is 2 indexes away.
public static List<Vector2i> RectangleCorners(Rectangle r) {
List<Vector2i> result = new(4);
result.Add(new(r.Left, r.Top));
result.Add(new(r.Right, r.Top));
result.Add(new(r.Right, r.Bottom));
result.Add(new(r.Left, r.Bottom));
return result;
}
public static Image<Rgba32> MakeImage(float width, float height) {
return new((int) Math.Ceiling(width), (int) Math.Ceiling(height));
}
@ -724,8 +759,8 @@ public class Game : GameWindow {
// string[] files = Directory.GetFiles(@"c:\users\colin\pictures\photos\2023\07\14\");
// string[] files = Directory.GetFiles(@"c:\users\colin\pictures\photos\2023\09\06\jpg");
// string[] files = Directory.GetFiles(@"G:\DCIM\100EOSR6\");
// string[] files = Directory.GetFiles(@"c:\users\colin\desktop\totte-output\2023\08\29");
string[] files = Directory.GetFiles(@"c:\users\colin\desktop\export");
string[] files = Directory.GetFiles(@"c:\users\colin\desktop\totte-output\2023\08\03");
// string[] files = Directory.GetFiles(@"c:\users\colin\desktop\export");
// string[] files = Directory.GetFiles(@"C:\Users\colin\Pictures\photos\2018\06\23");
// string[] files = Directory.GetFiles(@"C:\Users\colin\Desktop\Germany all\104D7000");
// string[] files = Directory.GetFiles(@"C:\Users\colin\Desktop\many-birds\");