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demo/scout: alpha-surface support for icon_painter

This commit is contained in:
Norman Feske 2014-09-12 20:25:53 +02:00
parent 94f9e989df
commit 5af830c0de
1 changed files with 28 additions and 28 deletions
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56
repos/demo/include/scout_gfx/icon_painter.h
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@ -42,12 +42,12 @@ class Icon_painter
/** /**
* Copy pixel with alpha * Copy pixel with alpha
*/ */
template <typename PT> template <typename SPT, typename TPT>
static inline void _transfer_pixel(PT const &src, int src_a, int alpha, PT *dst) static inline void _transfer_pixel(TPT const &src, int src_a, int alpha, SPT *dst)
{ {
if (src_a) { if (src_a) {
int register a = (src_a * alpha)>>8; int register a = (src_a * alpha)>>8;
if (a) *dst = PT::mix(*dst, src, a); if (a) *dst = SPT::mix(*dst, src, a);
} }
} }
@ -55,16 +55,16 @@ class Icon_painter
/** /**
* Draw corner slice * Draw corner slice
*/ */
template <typename PT> template <typename SPT, typename TPT>
static void _draw_cslice(PT const *src, unsigned char const *src_a, static void _draw_cslice(TPT const *src, unsigned char const *src_a,
unsigned src_pitch, int alpha, PT *dst, unsigned src_pitch, int alpha, SPT *dst,
unsigned dst_pitch, int w, int h) unsigned dst_pitch, int w, int h)
{ {
for (int j = 0; j < h; j++) { for (int j = 0; j < h; j++) {
PT const *s = src; TPT const *s = src;
unsigned char const *sa = src_a; unsigned char const *sa = src_a;
PT *d = dst; SPT *d = dst;
for (int i = 0; i < w; i++, s++, sa++, d++) for (int i = 0; i < w; i++, s++, sa++, d++)
_transfer_pixel(*s, *sa, alpha, d); _transfer_pixel(*s, *sa, alpha, d);
@ -77,16 +77,16 @@ class Icon_painter
/** /**
* Draw horizontal slice * Draw horizontal slice
*/ */
template <typename PT> template <typename SPT, typename TPT>
static void _draw_hslice(PT const *src, unsigned char const *src_a, static void _draw_hslice(TPT const *src, unsigned char const *src_a,
int src_pitch, int alpha, PT *dst, int src_pitch, int alpha, SPT *dst,
int dst_pitch, int w, int h) int dst_pitch, int w, int h)
{ {
for (int j = 0; j < h; j++) { for (int j = 0; j < h; j++) {
PT s = *src; TPT s = *src;
int sa = *src_a; int sa = *src_a;
PT *d = dst; SPT *d = dst;
for (int i = 0; i < w; i++, d++) for (int i = 0; i < w; i++, d++)
_transfer_pixel(s, sa, alpha, d); _transfer_pixel(s, sa, alpha, d);
@ -99,16 +99,16 @@ class Icon_painter
/** /**
* Draw vertical slice * Draw vertical slice
*/ */
template <typename PT> template <typename SPT, typename TPT>
static void _draw_vslice(PT const *src, unsigned char const *src_a, static void _draw_vslice(TPT const *src, unsigned char const *src_a,
int src_pitch, int alpha, PT *dst, int src_pitch, int alpha, SPT *dst,
int dst_pitch, int w, int h) int dst_pitch, int w, int h)
{ {
for (int i = 0; i < w; i++) { for (int i = 0; i < w; i++) {
PT s = *src; TPT s = *src;
int sa = *src_a; int sa = *src_a;
PT *d = dst; SPT *d = dst;
for (int j = 0; j < h; j++, d += dst_pitch) for (int j = 0; j < h; j++, d += dst_pitch)
_transfer_pixel(s, sa, alpha, d); _transfer_pixel(s, sa, alpha, d);
@ -121,17 +121,17 @@ class Icon_painter
/** /**
* Draw center slice * Draw center slice
*/ */
template <typename PT> template <typename SPT, typename TPT>
static void _draw_center(PT const *src, unsigned char const *src_a, static void _draw_center(TPT const *src, unsigned char const *src_a,
int src_pitch, int alpha, PT *dst, int src_pitch, int alpha, SPT *dst,
int dst_pitch, int w, int h) int dst_pitch, int w, int h)
{ {
PT s = *src; TPT s = *src;
int sa = *src_a; int sa = *src_a;
for (int j = 0; j < h; j++, dst += dst_pitch) { for (int j = 0; j < h; j++, dst += dst_pitch) {
PT *d = dst; SPT *d = dst;
for (int i = 0; i < w; i++, d++) for (int i = 0; i < w; i++, d++)
_transfer_pixel(s, sa, alpha, d); _transfer_pixel(s, sa, alpha, d);
@ -172,11 +172,11 @@ class Icon_painter
typedef Genode::Surface_base::Rect Rect; typedef Genode::Surface_base::Rect Rect;
template <typename PT> template <typename SPT, typename TPT>
static inline void paint(Genode::Surface<PT> &surface, Rect rect, static inline void paint(Genode::Surface<SPT> &surface, Rect rect,
Genode::Texture<PT> const &icon, unsigned alpha) Genode::Texture<TPT> const &icon, unsigned alpha)
{ {
PT *addr = surface.addr(); SPT *addr = surface.addr();
if (!addr || (alpha == 0)) return; if (!addr || (alpha == 0)) return;
@ -207,7 +207,7 @@ class Icon_painter
int const tx3 = Genode::max(tx4 - (int)icon_w/2, tx2); int const tx3 = Genode::max(tx4 - (int)icon_w/2, tx2);
int const ty3 = Genode::max(ty4 - (int)icon_h/2, ty2); int const ty3 = Genode::max(ty4 - (int)icon_h/2, ty2);
PT const *src = icon.pixel() + icon_w*ty1; TPT const *src = icon.pixel() + icon_w*ty1;
unsigned char const *src_a = icon.alpha() + icon_w*ty1; unsigned char const *src_a = icon.alpha() + icon_w*ty1;
int dx, dy, w, h; int dx, dy, w, h;