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Diffstat (limited to 'layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html')
| -rw-r--r-- | layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html b/layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html new file mode 100644 index 0000000000..c46abf5da0 --- /dev/null +++ b/layout/reftests/native-theme/scroll-thumb-minimum-size-notheme.html @@ -0,0 +1,31 @@ +<!DOCTYPE html> +<div style="width: 200px; height: 200px; overflow: scroll;; -moz-appearance:none"> + <div style="width: 3725px; height: 3725px"></div> +</div> +<!-- +The size of the inner div is computed as follow: + +Input: + outer_div_size: size of the div containing the scrollbar + button_size: size of the scrollbar arrow buttons + scrollbar_thickness: width/height of a vertical/horizontal scrollbar respectively + thumb_size: height/width of the thumb of a vertical/horizontal scrollbar respectively +Output: + inner_div_size: size of the div to be scrolled + +Formula: + slider_size = outer_div_size - 2 * button_size - scrollbar_thickness + thumb_size = slider_size * (outer_div_size / inner_div_size) + which gives: + inner_div_size = (outer_div_size - 2 * button_size - scrollbar_thickness) * (outer_div_size / thumb_size) + +Testcase constants: + outer_div_size = 200 + +On XP/Vista at 96 dpi with theme disabled: + thumb_size = 8 (minimum size) + button_size = 17 + scrollbar_thickness = 17 + + inner_div_size = (200 - 2 * 17 - 17) * (200 / 8) = 3725 +--> |