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/*
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2003 by Warren Lyford Delano of DeLano Scientific.
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information.
H* --------------------------------------------------\-----------------
I* Additional authors of this source file include:
-*
-*
-*
Z* -------------------------------------------------------------------
*/
#include"os_python.h"
#include "MemoryDebug.h"
#include "OOMac.h"
#include "os_gl.h"
#include "FontType.h"
#include "Text.h"
#include "Ortho.h"
#include "Scene.h"
#include "Character.h"
#include "Util.h"
#include "TypeFace.h"
typedef struct {
CFont Font; /* must be first */
PyMOLGlobals *G;
CTypeFace *TypeFace;
} CFontType;
#ifdef _PYMOL_INLINE
__inline__
#endif
static const char *_FontTypeRenderOpenGL(RenderInfo * info,
CFontType * I, const char *st,
float size, int flat, float *rpos SHADERCGOARG)
{
PyMOLGlobals *G = I->Font.G;
if(G->ValidContext) {
unsigned int c;
int pushed = OrthoGetPushed(G);
int kern_flag = false;
unsigned int last_c = 0;
int sampling = 1;
const float _0 = 0.0F, _1 = 1.0F, _m1 = -1.0F;
float x_indent = 0.0F, y_indent = 0.0F, z_indent = 0.0F;
float text_width = 0.f;
int unicode = 0;
int unicnt = 0;
sampling = info->sampling;
if(st && (*st)) {
float v_scale;
float screenWorldOffset[3] = { 0.0F, 0.0F, 0.0F };
v_scale = SceneGetScreenVertexScale(G, NULL);
if(size < _0) {
size = (int) (0.5F - size / v_scale);
}
if(rpos) {
if(rpos[0] < _1) { /* we need to measure the string width before starting to draw */
const char *sst = st;
while((c = *(sst++))) {
if(unicnt) {
if(!(c & 0x80)) /* corrupt UTF8 */
unicnt = 0;
else {
unicode = (unicode << 6) | (0x3F & c);
unicnt--;
c = unicode;
}
} else if(c & 0x80) {
while(c & 0x80) {
c = (c << 1) & 0xFF;
unicnt++;
}
unicode = (c >> (unicnt--));
}
if(!unicnt) {
CharFngrprnt fprnt;
unsigned char *rgba;
UtilZeroMem(&fprnt, sizeof(fprnt));
fprnt.u.i.text_id = I->Font.TextID;
fprnt.u.i.size = (int) (size * 64 * sampling);
rgba = fprnt.u.i.color;
TextGetColorUChar(G, rgba, rgba + 1, rgba + 2, rgba + 3);
rgba = fprnt.u.i.outline_color;
if(!flat) {
TextGetOutlineColor(G, rgba, rgba + 1, rgba + 2, rgba + 3);
} else {
TextGetColorUChar(G, rgba, rgba + 1, rgba + 2, rgba + 3);
}
fprnt.u.i.ch = c;
fprnt.u.i.flat = flat;
{
int id = CharacterFind(G, &fprnt);
if(!id) {
id = TypeFaceCharacterNew(I->TypeFace, &fprnt, size * sampling);
}
if(id) {
if(kern_flag) {
text_width += (TypeFaceGetKerning(I->TypeFace,
last_c, c, size) / sampling);
}
text_width += CharacterGetAdvance(G, sampling, id);
}
}
kern_flag = true;
last_c = c;
}
}
{
float factor = rpos[0] / 2.0F - 0.5F;
/* if -1. < rpos[0] < 1. , then we need to determine the label's width
so that we can justify it appropriately */
if(factor < _m1) // if rpos[0] < -1., right justified
factor = -_1;
if(factor > _0) // if rpos[0] > 1., left justified, label width not needed
factor = _0;
x_indent -= factor * text_width;
}
}
/* if label_position x is -1 to 1, the label is placed in x such that
0 - centered
-1 - right justified on projected point
1 - left justified on projected point
*/
if(rpos[0] < _m1) {
screenWorldOffset[0] -= (rpos[0] + _1);// / v_scale;
} else if(rpos[0] > _1) {
screenWorldOffset[0] -= (rpos[0] - _1);// / v_scale;
}
if(rpos[1] < _1) {
float factor = -rpos[1] / 2.0F + 0.5F;
if(factor > _1)
factor = _1;
if(factor < _0)
factor = _0;
y_indent = 0.75 * size * factor;
}
if(rpos[1] < _m1) {
screenWorldOffset[1] -= (rpos[1] + _1);
} else if(rpos[1] > _1) {
screenWorldOffset[1] -= (rpos[1] - _1);
}
/* leave room for fonts of finite depth */
z_indent = (rpos[2] < _m1) ? (rpos[2]+1.f) : (rpos[2] > 1.f) ? (rpos[2]-1.f) : 0.f;
if (!shaderCGO){
x_indent += screenWorldOffset[0] / v_scale;
y_indent += screenWorldOffset[1] / v_scale;
}
screenWorldOffset[2] += z_indent; // need to take into account weird -1 to 1, and sub 1 from abs val
}
if(!pushed) {
float *v = TextGetPos(G);
float loc[3];
float zero[3] = { 0.0F, 0.0F, 0.0F };
TextSetScreenWorldOffset(G, screenWorldOffset);
TextSetWorldPos(G, v);
if(rpos) {
if(info->ortho) {
float orig[3];
SceneOriginGet(G, orig);
SceneGetEyeNormal(G, orig, loc);
} else {
SceneGetEyeNormal(G, v, loc);
}
scale3f(loc, z_indent, loc);
add3f(v, loc, loc);
v = loc;
}
ScenePushRasterMatrix(G, v);
TextSetPos(G, zero);
}
if(rpos) {
// float ax = x_indent * v_scale, ay = y_indent * v_scale;
// printf("x_indent=%f y_indent=%f ax=%f ay=%f v_scale=%f rpos=%f %f %f\n", x_indent, y_indent, ax, ay, v_scale, rpos[0], rpos[1], rpos[2]);
TextIndent(G, x_indent, y_indent);
}
CharacterRenderOpenGLPrime(G, info);
while((c = *(st++))) {
if(unicnt) {
if(!(c & 0x80)) /* corrupt UTF8 */
unicnt = 0;
else {
unicode = (unicode << 6) | (0x3F & c);
unicnt--;
c = unicode;
}
} else if(c & 0x80) {
while(c & 0x80) {
c = (c << 1) & 0xFF;
unicnt++;
}
unicode = (c >> (unicnt--));
}
if(!unicnt) {
CharFngrprnt fprnt;
unsigned char *rgba;
UtilZeroMem(&fprnt, sizeof(fprnt));
fprnt.u.i.text_id = I->Font.TextID;
fprnt.u.i.size = (int) (size * 64 * sampling);
rgba = fprnt.u.i.color;
TextGetColorUChar(G, rgba, rgba + 1, rgba + 2, rgba + 3);
rgba = fprnt.u.i.outline_color;
TextGetOutlineColor(G, rgba, rgba + 1, rgba + 2, rgba + 3);
fprnt.u.i.ch = c;
fprnt.u.i.flat = flat;
{
int id = CharacterFind(G, &fprnt);
if(!id) {
id = TypeFaceCharacterNew(I->TypeFace, &fprnt, size * sampling);
}
if(id) {
if(kern_flag) {
TextAdvance(G, TypeFaceGetKerning(I->TypeFace,
last_c, c, size) / sampling);
}
CharacterRenderOpenGL(G, info, id, true SHADERCGOARGVAR); /* handles advance */
}
}
kern_flag = true;
last_c = c;
}
}
CharacterRenderOpenGLDone(G, info);
if(!pushed) {
ScenePopRasterMatrix(G);
}
}
}
return st;
}
static const char *FontTypeRenderOpenGL(RenderInfo * info, CFontType * I, const char *st, float size,
float *rpos SHADERCGOARG)
{
return _FontTypeRenderOpenGL(info, I, st, size, false, rpos SHADERCGOARGVAR);
}
static const char *FontTypeRenderOpenGLFlat(RenderInfo * info, CFontType * I, const char *st,
float size, float *rpos SHADERCGOARG)
{
return _FontTypeRenderOpenGL(info, I, st, size, true, rpos SHADERCGOARGVAR);
}
static const char *FontTypeRenderRay(CRay * ray, CFontType * I, const char *st, float size,
float *rpos)
{
PyMOLGlobals *G = I->Font.G;
unsigned int c;
int kern_flag = false;
unsigned int last_c = 0;
int sampling = ray->Sampling;
const float _0 = 0.0F, _1 = 1.0F, _m1 = -1.0F;
float x_indent = 0.0F, y_indent = 0.0F, z_indent = 0.0F;
float xn[3], yn[3], x_adj[3], y_adj[3], pos[3], *v;
int unicode = 0;
int unicnt = 0;
if(st && (*st)) {
float v_scale = SceneGetScreenVertexScale(G, NULL);
if(rpos) {
float loc[3];
/* leave room for fonts of finite depth */
z_indent = (rpos[2] < _m1) ? (rpos[2]+1.f) : (rpos[2] > 1.f) ? (rpos[2]-1.f) : 0.f;
v = TextGetPos(I->G);
if(ray->Ortho) {
float orig[3];
SceneOriginGet(G, orig);
SceneGetEyeNormal(G, orig, loc);
} else {
SceneGetEyeNormal(G, v, loc);
}
scale3f(loc, z_indent, loc);
add3f(v, loc, loc);
TextSetPos(I->G, loc);
}
RayGetScaledAxes(ray, xn, yn);
if(size < _0) {
size = (int) (0.5F - size / v_scale);
}
if(rpos) {
if(rpos[0] < _1) { /* we need to measure the string width before starting to draw */
float factor = rpos[0] / 2.0F - 0.5F;
const char *sst = st;
factor = (factor < _m1) ? _m1 : (factor > _0) ? _0 : factor;
while((c = *(sst++))) {
if(unicnt) {
if(!(c & 0x80)) /* corrupt UTF8 */
unicnt = 0;
else {
unicode = (unicode << 6) | (0x3F & c);
unicnt--;
c = unicode;
}
} else if(c & 0x80) {
while(c & 0x80) {
c = (c << 1) & 0xFF;
unicnt++;
}
unicode = (c >> (unicnt--));
}
if(!unicnt) {
CharFngrprnt fprnt;
unsigned char *rgba;
UtilZeroMem(&fprnt, sizeof(fprnt));
fprnt.u.i.text_id = I->Font.TextID;
fprnt.u.i.size = (int) (size * 64 * sampling);
rgba = fprnt.u.i.color;
TextGetColorUChar(G, rgba, rgba + 1, rgba + 2, rgba + 3);
rgba = fprnt.u.i.outline_color;
TextGetOutlineColor(G, rgba, rgba + 1, rgba + 2, rgba + 3);
fprnt.u.i.ch = c;
{
int id = CharacterFind(G, &fprnt);
if(!id) {
id = TypeFaceCharacterNew(I->TypeFace, &fprnt, size * sampling);
}
if(id) {
if(kern_flag) {
x_indent -= factor * TypeFaceGetKerning(I->TypeFace,
last_c,
c, size * sampling) / sampling;
}
x_indent -= factor * CharacterGetAdvance(G, 1, id);
kern_flag = true;
last_c = c;
}
}
}
}
}
if(rpos[0] < _m1) {
x_indent -= 2 * (rpos[0] + _1) / v_scale;
} else if(rpos[0] > _1) {
x_indent -= 2 * (rpos[0] - _1) / v_scale;
}
if(rpos[1] < _1) {
float factor = -rpos[1] / 2.0F + 0.5F;
if(factor > _1)
factor = _1;
if(factor < _0)
factor = _0;
y_indent = 0.75F * sampling * size * factor;
}
if(rpos[1] < _m1) {
y_indent -= 2 * (rpos[1] + _1) / v_scale;
} else if(rpos[1] > _1) {
y_indent -= 2 * (rpos[1] - _1) / v_scale;
}
v = TextGetPos(I->G);
scale3f(xn, x_indent, x_adj);
scale3f(yn, y_indent, y_adj);
subtract3f(v, x_adj, pos);
subtract3f(pos, y_adj, pos);
TextSetPos(I->G, pos);
}
kern_flag = false;
while((c = *(st++))) {
if(unicnt) {
if(!(c & 0x80)) /* corrupt UTF8 */
unicnt = 0;
else {
unicode = (unicode << 6) | (0x3F & c);
unicnt--;
c = unicode;
}
} else if(c & 0x80) {
while(c & 0x80) {
c = (c << 1) & 0xFF;
unicnt++;
}
unicode = (c >> (unicnt--));
}
if(!unicnt) {
CharFngrprnt fprnt;
unsigned char *rgba;
UtilZeroMem(&fprnt, sizeof(fprnt));
fprnt.u.i.text_id = I->Font.TextID;
fprnt.u.i.size = (int) (size * 64 * sampling);
rgba = fprnt.u.i.color;
TextGetColorUChar(G, rgba, rgba + 1, rgba + 2, rgba + 3);
rgba = fprnt.u.i.outline_color;
TextGetOutlineColor(G, rgba, rgba + 1, rgba + 2, rgba + 3);
fprnt.u.i.ch = c;
{
int id = CharacterFind(G, &fprnt);
if(!id) {
id = TypeFaceCharacterNew(I->TypeFace, &fprnt, size * sampling);
}
if(id) {
if(kern_flag) {
float kern = TypeFaceGetKerning(I->TypeFace,
last_c,
c,
size * sampling) / sampling;
v = TextGetPos(I->G);
scale3f(xn, kern, x_adj);
add3f(v, x_adj, pos);
TextSetPos(I->G, pos);
}
ray->character(id); /* handles advance */
kern_flag = true;
last_c = c;
}
}
}
}
}
return st;
}
static void FontTypeFree(CFont * font)
{
CFontType *I = (CFontType *) font;
TypeFaceFree(I->TypeFace);
OOFreeP(I);
}
CFont *FontTypeNew(PyMOLGlobals * G, unsigned char *dat, unsigned int len)
{
OOAlloc(G, CFontType);
FontInit(G, &I->Font);
I->G = G;
I->Font.fRenderOpenGL = (FontRenderOpenGLFn *) FontTypeRenderOpenGL;
I->Font.fRenderOpenGLFlat = (FontRenderOpenGLFn *) FontTypeRenderOpenGLFlat;
I->Font.fRenderRay = (FontRenderRayFn *) FontTypeRenderRay;
I->Font.fFree = FontTypeFree;
I->TypeFace = TypeFaceLoad(G, dat, len);
if(!I->TypeFace) {
OOFreeP(I);
}
return (CFont *) I;
}
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