mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-12-25 06:29:21 +00:00
282 lines
9.3 KiB
C
282 lines
9.3 KiB
C
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
|
// vim:cindent:ts=2:et:sw=2:
|
||
|
/* 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/. */
|
||
|
|
||
|
#ifndef NS_CSS_RENDERING_BORDERS_H
|
||
|
#define NS_CSS_RENDERING_BORDERS_H
|
||
|
|
||
|
#include "gfxRect.h"
|
||
|
#include "mozilla/Attributes.h"
|
||
|
#include "mozilla/gfx/2D.h"
|
||
|
#include "mozilla/gfx/PathHelpers.h"
|
||
|
#include "mozilla/RefPtr.h"
|
||
|
#include "nsColor.h"
|
||
|
#include "nsCOMPtr.h"
|
||
|
#include "nsStyleConsts.h"
|
||
|
#include "nsPresContext.h"
|
||
|
|
||
|
struct nsBorderColors;
|
||
|
|
||
|
namespace mozilla {
|
||
|
namespace gfx {
|
||
|
class GradientStops;
|
||
|
} // namespace gfx
|
||
|
} // namespace mozilla
|
||
|
|
||
|
// define this to enable a bunch of debug dump info
|
||
|
#undef DEBUG_NEW_BORDERS
|
||
|
|
||
|
//thickness of dashed line relative to dotted line
|
||
|
#define DOT_LENGTH 1 //square
|
||
|
#define DASH_LENGTH 3 //3 times longer than dot
|
||
|
|
||
|
//some shorthand for side bits
|
||
|
#define SIDE_BIT_TOP (1 << NS_SIDE_TOP)
|
||
|
#define SIDE_BIT_RIGHT (1 << NS_SIDE_RIGHT)
|
||
|
#define SIDE_BIT_BOTTOM (1 << NS_SIDE_BOTTOM)
|
||
|
#define SIDE_BIT_LEFT (1 << NS_SIDE_LEFT)
|
||
|
#define SIDE_BITS_ALL (SIDE_BIT_TOP|SIDE_BIT_RIGHT|SIDE_BIT_BOTTOM|SIDE_BIT_LEFT)
|
||
|
|
||
|
#define C_TL NS_CORNER_TOP_LEFT
|
||
|
#define C_TR NS_CORNER_TOP_RIGHT
|
||
|
#define C_BR NS_CORNER_BOTTOM_RIGHT
|
||
|
#define C_BL NS_CORNER_BOTTOM_LEFT
|
||
|
|
||
|
/*
|
||
|
* Helper class that handles border rendering.
|
||
|
*
|
||
|
* aDrawTarget -- the DrawTarget to which the border should be rendered
|
||
|
* outsideRect -- the rectangle on the outer edge of the border
|
||
|
*
|
||
|
* For any parameter where an array of side values is passed in,
|
||
|
* they are in top, right, bottom, left order.
|
||
|
*
|
||
|
* borderStyles -- one border style enum per side
|
||
|
* borderWidths -- one border width per side
|
||
|
* borderRadii -- a RectCornerRadii struct describing the w/h for each rounded corner.
|
||
|
* If the corner doesn't have a border radius, 0,0 should be given for it.
|
||
|
* borderColors -- one nscolor per side
|
||
|
* compositeColors -- a pointer to an array of composite color structs, or
|
||
|
* nullptr if none.
|
||
|
*
|
||
|
* skipSides -- a bit mask specifying which sides, if any, to skip
|
||
|
* backgroundColor -- the background color of the element.
|
||
|
* Used in calculating colors for 2-tone borders, such as inset and outset
|
||
|
* gapRect - a rectangle that should be clipped out to leave a gap in a border,
|
||
|
* or nullptr if none.
|
||
|
*/
|
||
|
|
||
|
typedef enum {
|
||
|
BorderColorStyleNone,
|
||
|
BorderColorStyleSolid,
|
||
|
BorderColorStyleLight,
|
||
|
BorderColorStyleDark
|
||
|
} BorderColorStyle;
|
||
|
|
||
|
class nsCSSBorderRenderer final
|
||
|
{
|
||
|
typedef mozilla::gfx::ColorPattern ColorPattern;
|
||
|
typedef mozilla::gfx::DrawTarget DrawTarget;
|
||
|
typedef mozilla::gfx::Float Float;
|
||
|
typedef mozilla::gfx::Path Path;
|
||
|
typedef mozilla::gfx::Rect Rect;
|
||
|
typedef mozilla::gfx::RectCornerRadii RectCornerRadii;
|
||
|
|
||
|
public:
|
||
|
|
||
|
nsCSSBorderRenderer(nsPresContext::nsPresContextType aPresContextType,
|
||
|
DrawTarget* aDrawTarget,
|
||
|
Rect& aOuterRect,
|
||
|
const uint8_t* aBorderStyles,
|
||
|
const Float* aBorderWidths,
|
||
|
RectCornerRadii& aBorderRadii,
|
||
|
const nscolor* aBorderColors,
|
||
|
nsBorderColors* const* aCompositeColors,
|
||
|
nscolor aBackgroundColor);
|
||
|
|
||
|
// draw the entire border
|
||
|
void DrawBorders();
|
||
|
|
||
|
// utility function used for background painting as well as borders
|
||
|
static void ComputeInnerRadii(const RectCornerRadii& aRadii,
|
||
|
const Float* aBorderSizes,
|
||
|
RectCornerRadii* aInnerRadiiRet);
|
||
|
|
||
|
// Given aRadii as the border radii for a rectangle, compute the
|
||
|
// appropriate radii for another rectangle *outside* that rectangle
|
||
|
// by increasing the radii, except keeping sharp corners sharp.
|
||
|
// Used for spread box-shadows
|
||
|
static void ComputeOuterRadii(const RectCornerRadii& aRadii,
|
||
|
const Float* aBorderSizes,
|
||
|
RectCornerRadii* aOuterRadiiRet);
|
||
|
|
||
|
private:
|
||
|
|
||
|
RectCornerRadii mBorderCornerDimensions;
|
||
|
|
||
|
// the PresContext type
|
||
|
nsPresContext::nsPresContextType mPresContextType;
|
||
|
|
||
|
// destination DrawTarget
|
||
|
DrawTarget* mDrawTarget;
|
||
|
|
||
|
// the rectangle of the outside and the inside of the border
|
||
|
Rect mOuterRect;
|
||
|
Rect mInnerRect;
|
||
|
|
||
|
// the style and size of the border
|
||
|
const uint8_t* mBorderStyles;
|
||
|
const Float* mBorderWidths;
|
||
|
RectCornerRadii mBorderRadii;
|
||
|
|
||
|
// colors
|
||
|
const nscolor* mBorderColors;
|
||
|
nsBorderColors* const* mCompositeColors;
|
||
|
|
||
|
// the background color
|
||
|
nscolor mBackgroundColor;
|
||
|
|
||
|
// calculated values
|
||
|
bool mOneUnitBorder;
|
||
|
bool mNoBorderRadius;
|
||
|
bool mAvoidStroke;
|
||
|
|
||
|
// For all the sides in the bitmask, would they be rendered
|
||
|
// in an identical color and style?
|
||
|
bool AreBorderSideFinalStylesSame(uint8_t aSides);
|
||
|
|
||
|
// For the given style, is the given corner a solid color?
|
||
|
bool IsSolidCornerStyle(uint8_t aStyle, mozilla::css::Corner aCorner);
|
||
|
|
||
|
// For the given solid corner, what color style should be used?
|
||
|
BorderColorStyle BorderColorStyleForSolidCorner(uint8_t aStyle, mozilla::css::Corner aCorner);
|
||
|
|
||
|
//
|
||
|
// Path generation functions
|
||
|
//
|
||
|
|
||
|
// Get the Rect for drawing the given corner
|
||
|
Rect GetCornerRect(mozilla::css::Corner aCorner);
|
||
|
// add the path for drawing the given side without any adjacent corners to the context
|
||
|
Rect GetSideClipWithoutCornersRect(mozilla::css::Side aSide);
|
||
|
|
||
|
// Create a clip path for the wedge that this side of
|
||
|
// the border should take up. This is only called
|
||
|
// when we're drawing separate border sides, so we know
|
||
|
// that ADD compositing is taking place.
|
||
|
//
|
||
|
// This code needs to make sure that the individual pieces
|
||
|
// don't ever (mathematically) overlap; the pixel overlap
|
||
|
// is taken care of by the ADD compositing.
|
||
|
already_AddRefed<Path> GetSideClipSubPath(mozilla::css::Side aSide);
|
||
|
|
||
|
// Given a set of sides to fill and a color, do so in the fastest way.
|
||
|
//
|
||
|
// Stroke tends to be faster for smaller borders because it doesn't go
|
||
|
// through the tessellator, which has initialization overhead. If
|
||
|
// we're rendering all sides, we can use stroke at any thickness; we
|
||
|
// also do TL/BR pairs at 1px thickness using stroke.
|
||
|
//
|
||
|
// If we can't stroke, then if it's a TL/BR pair, we use the specific
|
||
|
// TL/BR paths. Otherwise, we do the full path and fill.
|
||
|
//
|
||
|
// Calling code is expected to only set up a clip as necessary; no
|
||
|
// clip is needed if we can render the entire border in 1 or 2 passes.
|
||
|
void FillSolidBorder(const Rect& aOuterRect,
|
||
|
const Rect& aInnerRect,
|
||
|
const RectCornerRadii& aBorderRadii,
|
||
|
const Float* aBorderSizes,
|
||
|
int aSides,
|
||
|
const ColorPattern& aColor);
|
||
|
|
||
|
//
|
||
|
// core rendering
|
||
|
//
|
||
|
|
||
|
// draw the border for the given sides, using the style of the first side
|
||
|
// present in the bitmask
|
||
|
void DrawBorderSides (int aSides);
|
||
|
|
||
|
// function used by the above to handle -moz-border-colors
|
||
|
void DrawBorderSidesCompositeColors(int aSides, const nsBorderColors *compositeColors);
|
||
|
|
||
|
// draw the given dashed side
|
||
|
void DrawDashedSide (mozilla::css::Side aSide);
|
||
|
|
||
|
// Setup the stroke style for a given side
|
||
|
void SetupStrokeStyle(mozilla::css::Side aSize);
|
||
|
|
||
|
// Analyze if all border sides have the same width.
|
||
|
bool AllBordersSameWidth();
|
||
|
|
||
|
// Analyze if all borders are 'solid' this also considers hidden or 'none'
|
||
|
// borders because they can be considered 'solid' borders of 0 width and
|
||
|
// with no color effect.
|
||
|
bool AllBordersSolid(bool *aHasCompositeColors);
|
||
|
|
||
|
// Draw a solid color border that is uniformly the same width.
|
||
|
void DrawSingleWidthSolidBorder();
|
||
|
|
||
|
// Draw any border which is solid on all sides and does not use
|
||
|
// CompositeColors.
|
||
|
void DrawNoCompositeColorSolidBorder();
|
||
|
|
||
|
// Draw a solid border that has no border radius (i.e. is rectangular) and
|
||
|
// uses CompositeColors.
|
||
|
void DrawRectangularCompositeColors();
|
||
|
};
|
||
|
|
||
|
namespace mozilla {
|
||
|
#ifdef DEBUG_NEW_BORDERS
|
||
|
#include <stdarg.h>
|
||
|
|
||
|
static inline void PrintAsString(const mozilla::gfx::Point& p) {
|
||
|
fprintf (stderr, "[%f,%f]", p.x, p.y);
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsString(const mozilla::gfx::Size& s) {
|
||
|
fprintf (stderr, "[%f %f]", s.width, s.height);
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsString(const mozilla::gfx::Rect& r) {
|
||
|
fprintf (stderr, "[%f %f %f %f]", r.X(), r.Y(), r.Width(), r.Height());
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsString(const mozilla::gfx::Float f) {
|
||
|
fprintf (stderr, "%f", f);
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsString(const char *s) {
|
||
|
fprintf (stderr, "%s", s);
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsStringNewline(const char *s = nullptr) {
|
||
|
if (s)
|
||
|
fprintf (stderr, "%s", s);
|
||
|
fprintf (stderr, "\n");
|
||
|
fflush (stderr);
|
||
|
}
|
||
|
|
||
|
static inline void PrintAsFormatString(const char *fmt, ...) {
|
||
|
va_list vl;
|
||
|
va_start(vl, fmt);
|
||
|
vfprintf (stderr, fmt, vl);
|
||
|
va_end(vl);
|
||
|
}
|
||
|
|
||
|
#else
|
||
|
static inline void PrintAsString(const mozilla::gfx::Point& p) {}
|
||
|
static inline void PrintAsString(const mozilla::gfx::Size& s) {}
|
||
|
static inline void PrintAsString(const mozilla::gfx::Rect& r) {}
|
||
|
static inline void PrintAsString(const mozilla::gfx::Float f) {}
|
||
|
static inline void PrintAsString(const char *s) {}
|
||
|
static inline void PrintAsStringNewline(const char *s = nullptr) {}
|
||
|
static inline void PrintAsFormatString(const char *fmt, ...) {}
|
||
|
#endif
|
||
|
|
||
|
} // namespace mozilla
|
||
|
|
||
|
#endif /* NS_CSS_RENDERING_BORDERS_H */
|