Re: [PATCH] gitk: Work around empty back and forward images when buttons are disabled

2012-09-23 Thread Paul Mackerras
On Sat, Sep 22, 2012 at 09:46:48AM +0200, Stefan Haller wrote:
 On Mac, the back and forward buttons show an empty rectange instead of
 a grayed-out arrow when they are disabled. The reason is a Tk bug on Mac
 that causes disabled images not to draw correctly (not to draw at all,
 that is); see
 https://groups.google.com/forum/?fromgroups=#!topic/comp.lang.tcl/V-nW1JBq0eU.
 
 To work around this, we explicitly provide gray images for the disabled
 state; I think this looks better than the default stipple effect that you
 get on Windows as well, but that may be a matter of taste.
 
 Signed-off-by: Stefan Haller ste...@haller-berlin.de

Thanks, applied.

Paul.
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[PATCH] gitk: Work around empty back and forward images when buttons are disabled

2012-09-22 Thread Stefan Haller
On Mac, the back and forward buttons show an empty rectange instead of
a grayed-out arrow when they are disabled. The reason is a Tk bug on Mac
that causes disabled images not to draw correctly (not to draw at all,
that is); see
https://groups.google.com/forum/?fromgroups=#!topic/comp.lang.tcl/V-nW1JBq0eU.

To work around this, we explicitly provide gray images for the disabled
state; I think this looks better than the default stipple effect that you
get on Windows as well, but that may be a matter of taste.

Signed-off-by: Stefan Haller ste...@haller-berlin.de
---
 gitk | 17 +++--
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/gitk b/gitk
index d93bd99..e7723db 100755
--- a/gitk
+++ b/gitk
@@ -2161,7 +2161,7 @@ proc makewindow {} {
 trace add variable sha1string write sha1change
 pack $sha1entry -side left -pady 2
 
-image create bitmap bm-left -data {
+set bm_left_data {
#define left_width 16
#define left_height 16
static unsigned char left_bits[] = {
@@ -2169,7 +2169,7 @@ proc makewindow {} {
0x0e, 0x00, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x0e, 0x00, 0x1c, 0x00,
0x38, 0x00, 0x70, 0x00, 0xe0, 0x00, 0xc0, 0x01};
 }
-image create bitmap bm-right -data {
+set bm_right_data {
#define right_width 16
#define right_height 16
static unsigned char right_bits[] = {
@@ -2177,11 +2177,16 @@ proc makewindow {} {
0x00, 0x38, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x00, 0x38, 0x00, 0x1c,
0x00, 0x0e, 0x00, 0x07, 0x80, 0x03, 0xc0, 0x01};
 }
-${NS}::button .tf.bar.leftbut -image bm-left -command goback \
-   -state disabled -width 26
+image create bitmap bm-left -data $bm_left_data
+image create bitmap bm-left-gray -data $bm_left_data -foreground #999
+image create bitmap bm-right -data $bm_right_data
+image create bitmap bm-right-gray -data $bm_right_data -foreground #999
+
+${NS}::button .tf.bar.leftbut -image [list bm-left disabled bm-left-gray] \
+   -command goback -state disabled -width 26
 pack .tf.bar.leftbut -side left -fill y
-${NS}::button .tf.bar.rightbut -image bm-right -command goforw \
-   -state disabled -width 26
+${NS}::button .tf.bar.rightbut -image [list bm-right disabled 
bm-right-gray] \
+   -command goforw -state disabled -width 26
 pack .tf.bar.rightbut -side left -fill y
 
 ${NS}::label .tf.bar.rowlabel -text [mc Row]
-- 
1.7.12.1.399.gae20e0d

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