static void translate(int bnum, void (*drawscreen) (void)) {
float xstep, ystep;
xstep = (xright - xleft)/2.;
ystep = (ybot - ytop)/2.;
switch (bnum) {
case 0: ytop -= ystep; /* up arrow */
ybot -= ystep;
break;
case 1: xleft -= xstep; /* left arrow */
xright -= xstep;
break;
case 2: xleft += xstep; /* right arrow */
xright += xstep;
break;
case 3: ytop += ystep; /* down arrow */
ybot += ystep;
break;
default: printf("Graphics Error: Unknown translation button.\n");
printf("Got a button number of %d in routine translate.\n",
bnum);
}
update_transform();
drawscreen();
}
/**
* \brief Set font transformation matrix and shift vector
**/
void ass_font_set_transform(ass_font_t* font, double scale_x, double scale_y, FT_Vector* v)
{
font->scale_x = scale_x;
font->scale_y = scale_y;
font->v.x = v->x;
font->v.y = v->y;
update_transform(font);
}
void Polygon::setScale(glm::vec3 scale)
{
if (scale != m_scale)
{
m_scale = scale;
update_transform();
}
}
void Polygon::setRot(glm::mat4 rot)
{
if (rot != m_rot)
{
m_rot = rot;
update_transform();
}
}
void Polygon::setPos(glm::vec3 pos)
{
if (pos != m_pos)
{
m_pos = pos;
update_transform();
}
}
void init_world (float x1, float y1, float x2, float y2) {
xleft = x1;
xright = x2;
ytop = y1;
ybot = y2;
if (disp_type == SCREEN) {
update_transform();
}
else {
update_ps_transform();
}
}
void close_postscript (void) {
/* Properly ends postscript output and redirects output to screen. */
fprintf(ps,"showpage\n");
fprintf(ps,"\n%%%%Trailer\n");
fclose (ps);
disp_type = SCREEN;
update_transform(); /* Ensure screen world reflects any changes *
* made while printing. */
/* Need to make sure that we really set up the graphics context -- *
* don't want the change requested to match the current setting and *
* do nothing -> force the changes. */
force_setcolor (currentcolor);
force_setlinestyle (currentlinestyle);
force_setlinewidth (currentlinewidth);
force_setfontsize (currentfontsize);
}
static void zoom(int bnum, void (*drawscreen) (void)) {
/* Zooms in or out by a factor of 1.666. */
float xdiff, ydiff;
xdiff = xright - xleft;
ydiff = ybot - ytop;
if (strcmp(button[bnum].text,"Zoom In") == 0) {
xleft += xdiff/5.;
xright -= xdiff/5.;
ytop += ydiff/5.;
ybot -= ydiff/5.;
}
else {
xleft -= xdiff/3.;
xright += xdiff/3.;
ytop -= ydiff/3.;
ybot += ydiff/3.;
}
update_transform ();
drawscreen();
}
static void update_win (int x[2], int y[2], void (*drawscreen)(void)) {
float x1, x2, y1, y2;
x[0] = min(x[0],top_width-MWIDTH); /* Can't go under menu */
x[1] = min(x[1],top_width-MWIDTH);
y[0] = min(y[0],top_height-T_AREA_HEIGHT); /* Can't go under text area */
y[1] = min(y[1],top_height-T_AREA_HEIGHT);
if ((x[0] == x[1]) || (y[0] == y[1])) {
printf("Illegal (zero area) window. Window unchanged.\n");
return;
}
x1 = XTOWORLD(min(x[0],x[1]));
x2 = XTOWORLD(max(x[0],x[1]));
y1 = YTOWORLD(min(y[0],y[1]));
y2 = YTOWORLD(max(y[0],y[1]));
xleft = x1;
xright = x2;
ytop = y1;
ybot = y2;
update_transform();
drawscreen();
}
/**
* \brief Select a face with the given charcode and add it to ass_font_t
* \return index of the new face in font->faces, -1 if failed
*/
static int add_face(void* fc_priv, ass_font_t* font, uint32_t ch)
{
char* path;
int index;
FT_Face face;
int error;
int mem_idx;
if (font->n_faces == ASS_FONT_MAX_FACES)
return -1;
path = fontconfig_select(fc_priv, font->desc.family, font->desc.bold,
font->desc.italic, &index, ch);
mem_idx = find_font(font->library, path);
if (mem_idx >= 0) {
error = FT_New_Memory_Face(font->ftlibrary, (unsigned char*)font->library->fontdata[mem_idx].data,
font->library->fontdata[mem_idx].size, 0, &face);
if (error) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningMemoryFont, path);
return -1;
}
} else {
error = FT_New_Face(font->ftlibrary, path, index, &face);
if (error) {
mp_msg(MSGT_ASS, MSGL_WARN, MSGTR_LIBASS_ErrorOpeningFont, path, index);
return -1;
}
}
charmap_magic(face);
buggy_font_workaround(face);
font->faces[font->n_faces++] = face;
update_transform(font);
face_set_size(face, font->size);
return font->n_faces - 1;
}
static int ffi_update_transform(lua_State *L)
{
struct transform *tra = luaL_checkudata(L, 1, "mio.transform");
update_transform(tra);
return 0;
}
void event_loop (void (*act_on_button) (float x, float y),
void (*drawscreen) (void)) {
/* The program's main event loop. Must be passed a user routine *
* drawscreen which redraws the screen. It handles all window resizing *
* zooming etc. itself. If the user clicks a button in the graphics *
* (toplevel) area, the act_on_button routine passed in is called. */
XEvent report;
int bnum;
float x, y;
#define OFF 1
#define ON 0
turn_on_off (ON);
while (1) {
XNextEvent (display, &report);
switch (report.type) {
case Expose:
#ifdef VERBOSE
printf("Got an expose event.\n");
printf("Count is: %d.\n",report.xexpose.count);
printf("Window ID is: %d.\n",report.xexpose.window);
#endif
if (report.xexpose.count != 0)
break;
if (report.xexpose.window == menu)
drawmenu();
else if (report.xexpose.window == toplevel)
drawscreen();
else if (report.xexpose.window == textarea)
draw_message();
break;
case ConfigureNotify:
top_width = report.xconfigure.width;
top_height = report.xconfigure.height;
update_transform();
#ifdef VERBOSE
printf("Got a ConfigureNotify.\n");
printf("New width: %d New height: %d.\n",top_width,top_height);
#endif
break;
case ButtonPress:
#ifdef VERBOSE
printf("Got a buttonpress.\n");
printf("Window ID is: %d.\n",report.xbutton.window);
#endif
if (report.xbutton.window == toplevel) {
x = XTOWORLD(report.xbutton.x);
y = YTOWORLD(report.xbutton.y);
act_on_button (x, y);
}
else { /* A menu button was pressed. */
bnum = which_button(report.xbutton.window);
#ifdef VERBOSE
printf("Button number is %d\n",bnum);
#endif
button[bnum].ispressed = 1;
drawbut(bnum);
XFlush(display); /* Flash the button */
button[bnum].fcn(bnum, drawscreen);
button[bnum].ispressed = 0;
drawbut(bnum);
if (button[bnum].fcn == proceed) {
turn_on_off(OFF);
flushinput ();
return; /* Rather clumsy way of returning *
* control to the simulator */
}
}
break;
}
}
}
static void adjustwin (int bnum, void (*drawscreen) (void)) {
/* The window button was pressed. Let the user click on the two *
* diagonally opposed corners, and zoom in on this area. */
XEvent report;
int corner, xold, yold, x[2], y[2];
corner = 0;
xold = -1;
yold = -1; /* Don't need to init yold, but stops compiler warning. */
while (corner<2) {
XNextEvent (display, &report);
switch (report.type) {
case Expose:
#ifdef VERBOSE
printf("Got an expose event.\n");
printf("Count is: %d.\n",report.xexpose.count);
printf("Window ID is: %d.\n",report.xexpose.window);
#endif
if (report.xexpose.count != 0)
break;
if (report.xexpose.window == menu)
drawmenu();
else if (report.xexpose.window == toplevel) {
drawscreen();
xold = -1; /* No rubber band on screen */
}
else if (report.xexpose.window == textarea)
draw_message();
break;
case ConfigureNotify:
top_width = report.xconfigure.width;
top_height = report.xconfigure.height;
update_transform();
#ifdef VERBOSE
printf("Got a ConfigureNotify.\n");
printf("New width: %d New height: %d.\n",top_width,top_height);
#endif
break;
case ButtonPress:
#ifdef VERBOSE
printf("Got a buttonpress.\n");
printf("Window ID is: %d.\n",report.xbutton.window);
printf("Location (%d, %d).\n", report.xbutton.x,
report.xbutton.y);
#endif
if (report.xbutton.window != toplevel) break;
x[corner] = report.xbutton.x;
y[corner] = report.xbutton.y;
if (corner == 0) {
XSelectInput (display, toplevel, ExposureMask |
StructureNotifyMask | ButtonPressMask | PointerMotionMask);
}
else {
update_win(x,y,drawscreen);
}
corner++;
break;
case MotionNotify:
#ifdef VERBOSE
printf("Got a MotionNotify Event.\n");
printf("x: %d y: %d\n",report.xmotion.x,report.xmotion.y);
#endif
if (xold >= 0) { /* xold set -ve before we draw first box */
XDrawRectangle(display,toplevel,gcxor,min(x[0],xold),
min(y[0],yold),abs(x[0]-xold),abs(y[0]-yold));
}
/* Don't allow user to window under menu region */
xold = min(report.xmotion.x,top_width-1-MWIDTH);
yold = report.xmotion.y;
XDrawRectangle(display,toplevel,gcxor,min(x[0],xold),
min(y[0],yold),abs(x[0]-xold),abs(y[0]-yold));
break;
}
}
XSelectInput (display, toplevel, ExposureMask | StructureNotifyMask
| ButtonPressMask);
}
