fune/layout/style/test/ListCSSProperties.cpp
Markus Stange 2e951f24c1 Bug 1387594 - Add a chrome-only CSS property called -moz-font-smoothing-background-color. r=dbaron
This property accepts a color. It's inherited and defaults to transparent.
Its value is respected on macOS when rendering text into transparent pixels.
This property should be used for text that is placed on top of "vibrant"
-moz-appearances, in order to achieve high quality text rendering for such text.

In most cases, the property should be set to a named system color; an upcoming
patch in this patch series will add one such color for each vibrant
-moz-appearance value.
However, in some cases it can also be useful to use a custom color: If text
is rendered into an intermediate surface, for example because a mask is applied
to it, and the background color behind that intermediate surface is known, then
this property can be set to that background color in order to achieve subpixel
AA for the text inside the mask effect. In that case, the font smoothing
background color is respected because text is rendered into transparent pixels
*inside the intermediate surface*. At the moment, the only example of that use
case is the text of the active tab in the state where the text is overflowing.

MozReview-Commit-ID: D98qQnxoFaq
2017-09-14 23:09:46 +02:00

198 lines
5.8 KiB
C++

/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* build (from code) lists of all supported CSS properties */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "mozilla/ArrayUtils.h"
struct PropertyInfo {
const char *propName;
const char *domName;
const char *pref;
};
const PropertyInfo gLonghandProperties[] = {
#define CSS_PROP_PUBLIC_OR_PRIVATE(publicname_, privatename_) publicname_
#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, \
stylestruct_, stylestructoffset_, animtype_) \
{ #name_, #method_, pref_ },
#define CSS_PROP_LIST_INCLUDE_LOGICAL
#include "nsCSSPropList.h"
#undef CSS_PROP_LIST_INCLUDE_LOGICAL
#undef CSS_PROP
#undef CSS_PROP_PUBLIC_OR_PRIVATE
};
/*
* These are the properties for which domName in the above list should
* be used. They're in the same order as the above list, with some
* items skipped.
*/
const char* gLonghandPropertiesWithDOMProp[] = {
#define CSS_PROP_LIST_EXCLUDE_INTERNAL
#define CSS_PROP(name_, id_, method_, flags_, pref_, parsevariant_, kwtable_, \
stylestruct_, stylestructoffset_, animtype_) \
#name_,
#define CSS_PROP_LIST_INCLUDE_LOGICAL
#include "nsCSSPropList.h"
#undef CSS_PROP_LIST_INCLUDE_LOGICAL
#undef CSS_PROP
#undef CSS_PROP_LIST_EXCLUDE_INTERNAL
};
const PropertyInfo gShorthandProperties[] = {
#define CSS_PROP_PUBLIC_OR_PRIVATE(publicname_, privatename_) publicname_
// Need an extra level of macro nesting to force expansion of method_
// params before they get pasted.
#define LISTCSSPROPERTIES_INNER_MACRO(method_) #method_
#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_) \
{ #name_, LISTCSSPROPERTIES_INNER_MACRO(method_), pref_ },
#include "nsCSSPropList.h"
#undef CSS_PROP_SHORTHAND
#undef LISTCSSPROPERTIES_INNER_MACRO
#undef CSS_PROP_PUBLIC_OR_PRIVATE
#define CSS_PROP_ALIAS(name_, aliasid_, id_, method_, pref_) \
{ #name_, #method_, pref_ },
#include "nsCSSPropAliasList.h"
#undef CSS_PROP_ALIAS
};
/* see gLonghandPropertiesWithDOMProp */
const char* gShorthandPropertiesWithDOMProp[] = {
#define CSS_PROP_LIST_EXCLUDE_INTERNAL
#define CSS_PROP_SHORTHAND(name_, id_, method_, flags_, pref_) \
#name_,
#include "nsCSSPropList.h"
#undef CSS_PROP_SHORTHAND
#undef CSS_PROP_LIST_EXCLUDE_INTERNAL
#define CSS_PROP_ALIAS(name_, aliasid_, id_, method_, pref_) \
#name_,
#include "nsCSSPropAliasList.h"
#undef CSS_PROP_ALIAS
};
const char *gInaccessibleProperties[] = {
// Don't print the properties that aren't accepted by the parser, per
// CSSParserImpl::ParseProperty
"-x-cols",
"-x-lang",
"-x-span",
"-x-system-font",
"-x-text-zoom",
"-moz-context-properties",
"-moz-control-character-visibility",
"-moz-script-level", // parsed by UA sheets only
"-moz-script-size-multiplier",
"-moz-script-min-size",
"-moz-math-variant",
"-moz-math-display", // parsed by UA sheets only
"-moz-top-layer", // parsed by UA sheets only
"-moz-min-font-size-ratio", // parsed by UA sheets only
"-moz-font-smoothing-background-color", // chrome-only internal properties
"-moz-window-opacity", // chrome-only internal properties
"-moz-window-transform", // chrome-only internal properties
"-moz-window-transform-origin", // chrome-only internal properties
"-moz-window-shadow" // chrome-only internal properties
};
inline int
is_inaccessible(const char* aPropName)
{
for (unsigned j = 0; j < MOZ_ARRAY_LENGTH(gInaccessibleProperties); ++j) {
if (strcmp(aPropName, gInaccessibleProperties[j]) == 0)
return 1;
}
return 0;
}
void
print_array(const char *aName,
const PropertyInfo *aProps, unsigned aPropsLength,
const char * const * aDOMProps, unsigned aDOMPropsLength)
{
printf("var %s = [\n", aName);
int first = 1;
unsigned j = 0; // index into DOM prop list
for (unsigned i = 0; i < aPropsLength; ++i) {
const PropertyInfo *p = aProps + i;
if (is_inaccessible(p->propName))
// inaccessible properties never have DOM props, so don't
// worry about incrementing j. The assertion below will
// catch if they do.
continue;
if (first)
first = 0;
else
printf(",\n");
printf("\t{ name: \"%s\", prop: ", p->propName);
if (j >= aDOMPropsLength || strcmp(p->propName, aDOMProps[j]) != 0)
printf("null");
else {
++j;
if (strncmp(p->domName, "Moz", 3) == 0)
printf("\"%s\"", p->domName);
else
// lowercase the first letter
printf("\"%c%s\"", p->domName[0] + 32, p->domName + 1);
}
if (p->pref[0]) {
printf(", pref: \"%s\"", p->pref);
}
printf(" }");
}
if (j != aDOMPropsLength) {
fprintf(stderr, "Assertion failure %s:%d\n", __FILE__, __LINE__);
fprintf(stderr, "j==%d, aDOMPropsLength == %d\n", j, aDOMPropsLength);
exit(1);
}
printf("\n];\n\n");
}
int
main()
{
print_array("gLonghandProperties",
gLonghandProperties,
MOZ_ARRAY_LENGTH(gLonghandProperties),
gLonghandPropertiesWithDOMProp,
MOZ_ARRAY_LENGTH(gLonghandPropertiesWithDOMProp));
print_array("gShorthandProperties",
gShorthandProperties,
MOZ_ARRAY_LENGTH(gShorthandProperties),
gShorthandPropertiesWithDOMProp,
MOZ_ARRAY_LENGTH(gShorthandPropertiesWithDOMProp));
return 0;
}