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libsysprof-gtk: improve alignment for lines

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This commit is contained in:
Christian Hergert
2023-06-29 15:09:03 -07:00
parent 4d553ec88e
commit bc63f3f463
1 changed files with 6 additions and 6 deletions
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12
src/libsysprof-gtk/sysprof-line-layer.c
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@ -107,12 +107,12 @@ sysprof_line_layer_snapshot (GtkWidget *widget,
else else
cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE); cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
cairo_set_line_width (cr, 1); cairo_set_line_width (cr, .5);
cairo_set_matrix (cr, &(cairo_matrix_t) {1, 0, 0, -1, 0, height}); cairo_set_matrix (cr, &(cairo_matrix_t) {1, 0, 0, -1, 0, height});
first_x = last_x = floor (x_values[0] * width); first_x = last_x = floor (x_values[0] * width);
first_y = last_y = floor (y_values[0] * height); first_y = last_y = floor (y_values[0] * height) + .5;
cairo_move_to (cr, first_x, first_y); cairo_move_to (cr, first_x, first_y);
@ -121,7 +121,7 @@ sysprof_line_layer_snapshot (GtkWidget *widget,
for (guint i = 1; i < n_values; i++) for (guint i = 1; i < n_values; i++)
{ {
float x = floor (x_values[i] * width); float x = floor (x_values[i] * width);
float y = floor (y_values[i] * height); float y = floor (y_values[i] * height) + .5;
/* Skip if we are getting data incorrectly on the X axis. /* Skip if we are getting data incorrectly on the X axis.
* It should have been sorted by this point. * It should have been sorted by this point.
@ -146,7 +146,7 @@ sysprof_line_layer_snapshot (GtkWidget *widget,
for (guint i = 1; i < n_values; i++) for (guint i = 1; i < n_values; i++)
{ {
float x = floor (x_values[i] * width); float x = floor (x_values[i] * width);
float y = floor (y_values[i] * height); float y = floor (y_values[i] * height) + .5;
/* Skip if we are getting data incorrectly on the X axis. /* Skip if we are getting data incorrectly on the X axis.
* It should have been sorted by this point. * It should have been sorted by this point.
@ -173,8 +173,8 @@ sysprof_line_layer_snapshot (GtkWidget *widget,
fill_color.alpha *= .25; fill_color.alpha *= .25;
gdk_cairo_set_source_rgba (cr, &fill_color); gdk_cairo_set_source_rgba (cr, &fill_color);
cairo_line_to (cr, last_x, 0); cairo_line_to (cr, last_x, .5);
cairo_line_to (cr, first_x, 0); cairo_line_to (cr, first_x, .5);
cairo_line_to (cr, first_x, first_y); cairo_line_to (cr, first_x, first_y);
cairo_fill (cr); cairo_fill (cr);
} }