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< > BotCompany Repo | #1018716 // imageSurfaceOnMouseDrag

JavaX fragment (include)

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// combines mousePressed, mouseDragged and mouseReleased
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// left button only
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// f : voidfunc(Pt) - point can be null, then mouse was released
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static void imageSurfaceOnMouseDrag(final ImageSurface is, final O f) {
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  swing {
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    MouseAdapter ma = new MouseAdapter {
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      bool in;
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      public void mouseDragged(MouseEvent e) {
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        if (!in) ret;
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        pcallF(f, is.pointFromEvent(e));
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      }
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      public void mousePressed(MouseEvent e) {
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        if (e.getButton() != MouseEvent.BUTTON1) ret;
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        in = true;
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        pcallF(f, is.pointFromEvent(e));
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      }
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      public void mouseReleased(MouseEvent e) {
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        if (e.getButton() != MouseEvent.BUTTON1) ret;
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        if (!in) ret;
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        in = false;
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        pcallF(f, (Pt) null);
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      }
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    };
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    is.addMouseMotionListener(ma);
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    is.addMouseListener(ma);
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  }
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}

Author comment

Began life as a copy of #1005948

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Snippet ID: #1018716
Snippet name: imageSurfaceOnMouseDrag
Eternal ID of this version: #1018716/1
Text MD5: 6a39a1d6935c20291c117686ec4012a8
Author: stefan
Category: javax / gui
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2018-10-11 20:50:01
Source code size: 871 bytes / 30 lines
Pitched / IR pitched: No / No
Views / Downloads: 263 / 296
Referenced in: [show references]