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gEDA-cvs: pcb.git: branch: master updated (8d1d20e9ccc256edbaceec81696eb6496f4c0ac5)



The branch, master has been updated
       via  8d1d20e9ccc256edbaceec81696eb6496f4c0ac5 (commit)
       via  17d90bcba9db4e96f9c49ed3871f516a8ad28d83 (commit)
      from  c6338c9b813787819812fa95bfacabb7088e9632 (commit)

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=========
 Summary
=========

 src/hid/gtk/gtkhid-main.c |  107 ++++++++++----------------------------------
 1 files changed, 25 insertions(+), 82 deletions(-)


=================
 Commit Messages
=================

commit 8d1d20e9ccc256edbaceec81696eb6496f4c0ac5
Author: Peter Clifton <pcjc2@xxxxxxxxx>
Commit: Peter Clifton <pcjc2@xxxxxxxxx>

    hid/gtk: Some cleanups to the zoom_to() function
    
    Still confusing, but at least its not the fault of the code formatting now.

:100644 100644 0f9fdea... c71e70b... M	src/hid/gtk/gtkhid-main.c

commit 17d90bcba9db4e96f9c49ed3871f516a8ad28d83
Author: Peter Clifton <pcjc2@xxxxxxxxx>
Commit: Peter Clifton <pcjc2@xxxxxxxxx>

    hid/gtk: Remove old debugging code from zoom_to and zoom_by() functions
    
    This code was adding to clutter in the functions, and appears in some
    cases to be bit-rotten. (The coordinates it operated on don't appear to
    be have been consistent with the current GUI code).

:100644 100644 8500f6a... 0f9fdea... M	src/hid/gtk/gtkhid-main.c

=========
 Changes
=========

commit 8d1d20e9ccc256edbaceec81696eb6496f4c0ac5
Author: Peter Clifton <pcjc2@xxxxxxxxx>
Commit: Peter Clifton <pcjc2@xxxxxxxxx>

    hid/gtk: Some cleanups to the zoom_to() function
    
    Still confusing, but at least its not the fault of the code formatting now.

diff --git a/src/hid/gtk/gtkhid-main.c b/src/hid/gtk/gtkhid-main.c
index 0f9fdea..c71e70b 100644
--- a/src/hid/gtk/gtkhid-main.c
+++ b/src/hid/gtk/gtkhid-main.c
@@ -179,64 +179,46 @@ Zoom (int argc, char **argv, int x, int y)
 static void
 zoom_to (double new_zoom, int x, int y)
 {
-  double max_zoom;
+  double min_zoom, max_zoom;
+  double xtmp, ytmp;
 
   /* gport->zoom:
    * zoom value is PCB units per screen pixel.  Larger numbers mean zooming
    * out - the largest value means you are looking at the whole board.
    *
-   * PCB units per screen pixel
-   *
    * gport->view_width and gport->view_height are in PCB coordinates
    */
 
-  /* Find the zoom that would just make the entire board fit */
-  max_zoom = PCB->MaxWidth / gport->width;
-  if (max_zoom < PCB->MaxHeight / gport->height)
-    max_zoom = PCB->MaxHeight / gport->height;
+  /* Set the "minimum" zoom constant (maximum zoom),
+   * at 1 pixel per PCB unit */
+  min_zoom = 1;
 
-  /* 
-   * clip the zooming so we can never have more than 1 pixel per PCB
-   * unit and never zoom out more than viewing the entire board
-   */
-     
-  if (new_zoom < 1)
-    new_zoom = 1;
-  if (new_zoom > max_zoom)
-    new_zoom = max_zoom;
+  /* Set the "maximum" zoom constant (minimum zoom),
+   * to make the entire board just fit inside the viewport */
+  max_zoom = MAX (PCB->MaxWidth  / gport->width,
+                  PCB->MaxHeight / gport->height);
 
-  if (gport->zoom != new_zoom)
-    {
-      gdouble xtmp, ytmp;
-      gint x0, y0;
-
-      xtmp = (SIDE_X (gport->pcb_x) - gport->view_x0) /
-                (gdouble) gport->view_width;
-      ytmp = (SIDE_Y (gport->pcb_y) - gport->view_y0) /
-                (gdouble) gport->view_height;
-
-      gport->zoom = new_zoom;
-      pixel_slop = new_zoom;
-      ghid_port_ranges_scale(FALSE);
-
-      x0 = SIDE_X (gport->pcb_x) - xtmp * gport->view_width;
-      if (x0 < 0)
-        x0 = 0;
-      gport->view_x0 = x0;
-
-      y0 = SIDE_Y (gport->pcb_y) - ytmp * gport->view_height;
-      if (y0 < 0)
-        y0 = 0;
-      gport->view_y0 = y0;
-
-      ghidgui->adjustment_changed_holdoff = TRUE;
-      gtk_range_set_value (GTK_RANGE (ghidgui->h_range), gport->view_x0);
-      gtk_range_set_value (GTK_RANGE (ghidgui->v_range), gport->view_y0);
-      ghidgui->adjustment_changed_holdoff = FALSE;
-
-      ghid_port_ranges_changed();
-    }
+  new_zoom = MIN (MAX (min_zoom, new_zoom), max_zoom);
+
+  if (gport->zoom == new_zoom)
+    return;
+
+  xtmp = (SIDE_X (gport->pcb_x) - gport->view_x0) / (double)gport->view_width;
+  ytmp = (SIDE_Y (gport->pcb_y) - gport->view_y0) / (double)gport->view_height;
+
+  gport->zoom = new_zoom;
+  pixel_slop = new_zoom;
+  ghid_port_ranges_scale (FALSE);
 
+  gport->view_x0 = MAX (0, SIDE_X (gport->pcb_x) - xtmp * gport->view_width);
+  gport->view_y0 = MAX (0, SIDE_Y (gport->pcb_y) - ytmp * gport->view_height);
+
+  ghidgui->adjustment_changed_holdoff = TRUE;
+  gtk_range_set_value (GTK_RANGE (ghidgui->h_range), gport->view_x0);
+  gtk_range_set_value (GTK_RANGE (ghidgui->v_range), gport->view_y0);
+  ghidgui->adjustment_changed_holdoff = FALSE;
+
+  ghid_port_ranges_changed ();
   ghid_set_status_line_label ();
 }
 

commit 17d90bcba9db4e96f9c49ed3871f516a8ad28d83
Author: Peter Clifton <pcjc2@xxxxxxxxx>
Commit: Peter Clifton <pcjc2@xxxxxxxxx>

    hid/gtk: Remove old debugging code from zoom_to and zoom_by() functions
    
    This code was adding to clutter in the functions, and appears in some
    cases to be bit-rotten. (The coordinates it operated on don't appear to
    be have been consistent with the current GUI code).

diff --git a/src/hid/gtk/gtkhid-main.c b/src/hid/gtk/gtkhid-main.c
index 8500f6a..0f9fdea 100644
--- a/src/hid/gtk/gtkhid-main.c
+++ b/src/hid/gtk/gtkhid-main.c
@@ -179,10 +179,7 @@ Zoom (int argc, char **argv, int x, int y)
 static void
 zoom_to (double new_zoom, int x, int y)
 {
-  double max_zoom, xfrac, yfrac;
-#ifdef DEBUG
-  int cx, cy;
-#endif
+  double max_zoom;
 
   /* gport->zoom:
    * zoom value is PCB units per screen pixel.  Larger numbers mean zooming
@@ -193,27 +190,11 @@ zoom_to (double new_zoom, int x, int y)
    * gport->view_width and gport->view_height are in PCB coordinates
    */
 
-#ifdef DEBUG
-  pcb_printf ("\nzoom_to( %g, %#mS, %#mS)\n", new_zoom, x, y);
-#endif
-
-  xfrac = (double) x / (double) gport->view_width;
-  yfrac = (double) y / (double) gport->view_height;
-
-  if (ghid_flip_x)
-    xfrac = 1-xfrac;
-  if (ghid_flip_y)
-    yfrac = 1-yfrac;
-
   /* Find the zoom that would just make the entire board fit */
   max_zoom = PCB->MaxWidth / gport->width;
   if (max_zoom < PCB->MaxHeight / gport->height)
     max_zoom = PCB->MaxHeight / gport->height;
 
-#ifdef DEBUG
-  printf ("zoom_to():  max_zoom = %g\n", max_zoom);
-#endif
-
   /* 
    * clip the zooming so we can never have more than 1 pixel per PCB
    * unit and never zoom out more than viewing the entire board
@@ -224,18 +205,6 @@ zoom_to (double new_zoom, int x, int y)
   if (new_zoom > max_zoom)
     new_zoom = max_zoom;
 
-#ifdef DEBUG
-  printf ("max_zoom = %g, xfrac = %g, yfrac = %g, new_zoom = %g\n", 
-	  max_zoom, xfrac, yfrac, new_zoom);
-
-  /* find center x and y */
-  cx = gport->view_x0 + gport->view_width * xfrac * gport->zoom;
-  cy = gport->view_y0 + gport->view_height * yfrac * gport->zoom;
-
-  pcb_printf ("zoom_to():  x0 = %#mS, cx = %#mS\n", gport->view_x0, cx);
-  pcb_printf ("zoom_to():  y0 = %#mS, cy = %#mS\n", gport->view_y0, cy);
-#endif
-
   if (gport->zoom != new_zoom)
     {
       gdouble xtmp, ytmp;
@@ -268,20 +237,12 @@ zoom_to (double new_zoom, int x, int y)
       ghid_port_ranges_changed();
     }
 
-#ifdef DEBUG
-  printf ("zoom_to():  new x0 = %d\n", gport->view_x0);
-  printf ("zoom_to():  new y0 = %d\n", gport->view_y0);
-#endif
   ghid_set_status_line_label ();
 }
 
 void
 zoom_by (double factor, int x, int y)
 {
-#ifdef DEBUG
-  pcb_printf ("\nzoom_by( %g, %#mS, %#mS).  old gport->zoom = %g\n", 
-	  factor, x, y, gport->zoom);
-#endif
   zoom_to (gport->zoom * factor, x, y);
 }
 




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