*
* Dependencies: Xlib, XForms
*
- * Copyright: (c) 1996, Alejandro Aguilar Sierra
+ * Copyright: 1996, Alejandro Aguilar Sierra
*
* Version: 0.8beta, Mathed & Lyx project.
*
#include <config.h>
#include FORMS_H_LOCATION
+#include <algorithm>
#include <cstdlib>
#include "symbol_def.h"
#include "math_inset.h"
#include "LColor.h"
#include "Painter.h"
+using std::sort;
+using std::lower_bound;
+using std::endl;
+
/*
* Internal struct of a drawing: code n x1 y1 ... xn yn, where code is:
* 0 = end, 1 = line, 2 = polyline, 3 = square line, 4= square polyline
0.0
};
-static struct math_deco_struct {
- int code; float *data; int angle;
-} math_deco_table[] = {
+struct math_deco_struct {
+ int code;
+ float * data;
+ int angle;
+};
+
+static
+math_deco_struct math_deco_table[] = {
// Decorations
{ LM_widehat, &angle[0], 3 },
{ LM_ldots, &hline3[0], 0 },
{ LM_cdots, &hline3[0], 0 },
{ LM_vdots, &hline3[0], 1 },
- { LM_ddots, &dline3[0], 0 },
-
- { 0, 0, 0 }
+ { LM_ddots, &dline3[0], 0 }
};
-inline int odd(int x) { return ((x) & 1); }
+inline
+int odd(int x) { return ((x) & 1); }
typedef float matriz_data[2][2];
const matriz_data MATIDEN= { {1, 0}, {0, 1}};
extern int mathed_char_width(short type, int style, byte c);
-extern int mathed_char_height(short, int, byte, int&, int&);
+extern int mathed_char_height(short, int, byte, int &, int &);
#define mateq(m1, m2) memcpy(m1, m2, sizeof(matriz_data))
Matriz() { mateq(m, MATIDEN); }
void rota(int);
void escala(float, float);
- void transf(float, float, float&, float&);
+ void transf(float, float, float &, float &);
protected:
matriz_data m;
- void matmat(matriz_data& a);
+ void matmat(matriz_data & a);
};
}
-void Matriz::matmat(matriz_data& a)
+void Matriz::matmat(matriz_data & a)
{
matriz_data c;
for (int i = 0;i < 2; ++i) {
- c[0][i] = a[0][0]*m[0][i] + a[0][1]*m[1][i];
- c[1][i] = a[1][0]*m[0][i] + a[1][1]*m[1][i];
+ c[0][i] = a[0][0] * m[0][i] + a[0][1] * m[1][i];
+ c[1][i] = a[1][0] * m[0][i] + a[1][1] * m[1][i];
}
mateq(m, c);
}
-void Matriz::transf(float xp, float yp, float &x, float &y)
+void Matriz::transf(float xp, float yp, float & x, float & y)
{
- x = m[0][0]*xp + m[0][1]*yp;
- y = m[1][0]*xp + m[1][1]*yp;
+ x = m[0][0] * xp + m[0][1] * yp;
+ y = m[1][0] * xp + m[1][1] * yp;
}
+struct math_deco_compare {
+ /// for use by sort
+ inline
+ int operator()(math_deco_struct const & a,
+ math_deco_struct const & b) const {
+ return a.code < b.code;
+ }
+ /// for use by lower_bound
+ inline
+ int operator()(math_deco_struct const & a, int b) const {
+ return a.code < b;
+ }
+};
+
+
+static
+int const math_deco_table_size = sizeof(math_deco_table) /sizeof(math_deco_struct);
+
+class init_deco_table {
+public:
+ init_deco_table() {
+ if (!init) {
+ sort(math_deco_table,
+ math_deco_table + math_deco_table_size,
+ math_deco_compare());
+ init_deco_table::init = true;
+ }
+ }
+private:
+ static bool init;
+};
+
+bool init_deco_table::init = false;
+static init_deco_table idt;
+
+// If we had exceptions we could return a reference in stead and not
+// have to check for a null pointer in mathed_draw_deco
+
+#define USE_EXCEPTIONS 0
+#if USE_EXCEPTIONS
+struct deco_not_found {};
+
static
-int search_deco(int code)
+math_deco_struct const & search_deco(int code)
{
- int i = 0;
-
- while (math_deco_table[i].code && math_deco_table[i].code!= code) ++i;
- if (!math_deco_table[i].code) i = -1;
- return i;
+ math_deco_struct * res =
+ lower_bound(math_deco_table,
+ math_deco_table + math_deco_table_size,
+ code, math_deco_compare());
+ if (res != math_deco_table + math_deco_table_size &&
+ res->code == code)
+ return *res;
+ throw deco_not_found();
}
+#else
+
+static
+math_deco_struct const * search_deco(int code)
+{
+ math_deco_struct * res =
+ lower_bound(math_deco_table,
+ math_deco_table + math_deco_table_size,
+ code, math_deco_compare());
+ if (res != math_deco_table + math_deco_table_size &&
+ res->code == code)
+ return res;
+ return 0;
+}
+#endif
void mathed_draw_deco(Painter & pain, int x, int y, int w, int h, int code)
{
Matriz mt, sqmt;
float xx, yy, x2, y2;
int i = 0;
+
+#if USE_EXCEPTIONS
+ math_deco_struct mds;
+ try {
+ mds = search_deco(code);
+ }
+ catch (deco_not_found) {
+ // Should this ever happen?
+ lyxerr << "Deco was not found. Programming error?" << endl;
+ return;
+ }
- int j = search_deco(code);
- if (j < 0) return;
+ int r = mds.angle;
+ float * d = mds.data;
+
+ if (h > 70 && (mds.code == int('(')
+ || mds.code == int(')')))
+ d = parenthHigh;
+#else
+ math_deco_struct const * mds = search_deco(code);
+ if (!mds) {
+ // Should this ever happen?
+ lyxerr << "Deco was not found. Programming error?" << endl;
+ return;
+ }
+
- int r = math_deco_table[j].angle;
- float * d = math_deco_table[j].data;
+ int r = mds->angle;
+ float * d = mds->data;
- if (h > 70 && (math_deco_table[j].code == int('(') || math_deco_table[j].code == int(')')))
+ if (h > 70 && (mds->code == int('(')
+ || mds->code == int(')')))
d = parenthHigh;
+#endif
mt.rota(r);
mt.escala(w, h);
{
int xp[32], yp[32];
n = int(d[i++]);
- for (j = 0; j < n; ++j) {
+ for (int j = 0; j < n; ++j) {
xx = d[i++]; yy = d[i++];
// lyxerr << " " << xx << " " << yy << " ";
if (code == 4)
if (left == '.') {
pain.line(x + 4, yo - ascent,
x + 4, yo + descent,
- LColor::mathcursor);
+ LColor::mathcursor, Painter::line_onoffdash);
} else
mathed_draw_deco(pain, x, y - ascent, dw, Height(), left);
- x += Width()-dw-2;
+ x += Width() - dw - 2;
if (right == '.') {
pain.line(x + 4, yo - ascent,
x + 4, yo + descent,
- LColor::mathcursor);
+ LColor::mathcursor, Painter::line_onoffdash);
} else
mathed_draw_deco(pain, x, y-ascent, dw, Height(), right);
}
projects / lyx.git / blobdiff