static void do_links(fz_link *link, int xofs, int yofs)
{
fz_rect r;
float x, y;
x = ui.x;
y = ui.y;
xofs -= page_tex.x;
yofs -= page_tex.y;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
while (link)
{
r = link->rect;
fz_transform_rect(&r, &page_ctm);
if (x >= xofs + r.x0 && x < xofs + r.x1 && y >= yofs + r.y0 && y < yofs + r.y1)
{
ui.hot = link;
if (!ui.active && ui.down)
ui.active = link;
}
if (ui.hot == link || showlinks)
{
if (ui.active == link && ui.hot == link)
glColor4f(0, 0, 1, 0.4f);
else if (ui.hot == link)
glColor4f(0, 0, 1, 0.2f);
else
glColor4f(0, 0, 1, 0.1f);
glRectf(xofs + r.x0, yofs + r.y0, xofs + r.x1, yofs + r.y1);
}
if (ui.active == link && !ui.down)
{
if (ui.hot == link)
{
if (fz_is_external_link(ctx, link->uri))
open_browser(link->uri);
else
{
jump_to_page(fz_resolve_link(ctx, doc, link->uri, NULL, NULL));
ui_needs_update = 1;
}
}
}
link = link->next;
}
glDisable(GL_BLEND);
}
static void do_links(fz_link *link, int xofs, int yofs)
{
fz_rect r;
float x, y;
x = ui.x;
y = ui.y;
xofs -= page_tex.x;
yofs -= page_tex.y;
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
while (link)
{
r = link->rect;
fz_transform_rect(&r, &page_ctm);
if (x >= xofs + r.x0 && x < xofs + r.x1 && y >= yofs + r.y0 && y < yofs + r.y1)
{
ui.hot = link;
if (!ui.active && ui.down)
ui.active = link;
}
if (ui.hot == link || showlinks)
{
if (ui.active == link && ui.hot == link)
glColor4f(0, 0, 1, 0.4f);
else if (ui.hot == link)
glColor4f(0, 0, 1, 0.2f);
else
glColor4f(0, 0, 1, 0.1f);
glRectf(xofs + r.x0, yofs + r.y0, xofs + r.x1, yofs + r.y1);
}
if (ui.active == link && !ui.down)
{
if (ui.hot == link)
{
if (link->dest.kind == FZ_LINK_GOTO)
jump_to_page(link->dest.ld.gotor.page);
else if (link->dest.kind == FZ_LINK_URI)
open_browser(link->dest.ld.uri.uri);
}
ui_needs_update = 1;
}
link = link->next;
}
glDisable(GL_BLEND);
}
static int do_outline_imp(fz_outline *node, int end, int x0, int x1, int x, int y)
{
int h = 0;
int p = currentpage;
int n = end;
while (node)
{
if (node->dest.kind == FZ_LINK_GOTO)
{
p = node->dest.ld.gotor.page;
if (ui.x >= x0 && ui.x < x1 && ui.y >= y + h && ui.y < y + h + ui.lineheight)
{
ui.hot = node;
if (!ui.active && ui.down)
{
ui.active = node;
jump_to_page(p);
ui_needs_update = 1; /* we changed the current page, so force a redraw */
}
}
n = end;
if (node->next && node->next->dest.kind == FZ_LINK_GOTO)
{
n = node->next->dest.ld.gotor.page;
}
if (currentpage == p || (currentpage > p && currentpage < n))
{
glColor4f(0.9f, 0.9f, 0.9f, 1.0f);
glRectf(x0, y + h, x1, y + h + ui.lineheight);
}
}
glColor4f(0, 0, 0, 1);
ui_draw_string(ctx, x, y + h + ui.baseline, node->title);
h += ui.lineheight;
if (node->down)
h += do_outline_imp(node->down, n, x0, x1, x + ui.lineheight, y + h);
node = node->next;
}
return h;
}
static void do_app(void)
{
if (ui.key == KEY_F4 && ui.mod == GLFW_MOD_ALT)
quit();
if (ui.down || ui.middle || ui.right || ui.key)
showinfo = 0;
if (!ui.focus && ui.key)
{
switch (ui.key)
{
case 'q':
quit();
break;
case 'm':
if (number == 0)
push_history();
else if (number > 0 && number < nelem(marks))
marks[number] = currentpage;
break;
case 't':
if (number == 0)
{
if (history_count > 0)
pop_history();
}
else if (number > 0 && number < nelem(marks))
{
jump_to_page(marks[number]);
}
break;
case 'T':
if (number == 0)
{
if (future_count > 0)
pop_future();
}
break;
case 'N':
search_dir = -1;
if (search_hit_page == currentpage)
search_page = currentpage + search_dir;
else
search_page = currentpage;
if (search_page >= 0 && search_page < fz_count_pages(ctx, doc))
{
search_hit_page = -1;
if (search_needle)
search_active = 1;
}
break;
case 'n':
search_dir = 1;
if (search_hit_page == currentpage)
search_page = currentpage + search_dir;
else
search_page = currentpage;
if (search_page >= 0 && search_page < fz_count_pages(ctx, doc))
{
search_hit_page = -1;
if (search_needle)
search_active = 1;
}
break;
case 'f':
toggle_fullscreen();
break;
case 'w':
shrinkwrap();
break;
case 'r':
reload();
break;
case 'o':
toggle_outline();
break;
case 'W':
auto_zoom_w();
break;
case 'H':
auto_zoom_h();
break;
case 'Z':
auto_zoom();
break;
case 'z':
currentzoom = number > 0 ? number : DEFRES;
break;
case '<':
currentpage -= 10 * fz_maxi(number, 1);
break;
case '>':
currentpage += 10 * fz_maxi(number, 1);
break;
case ',':
case KEY_PAGE_UP:
currentpage -= fz_maxi(number, 1);
break;
case '.':
case KEY_PAGE_DOWN:
currentpage += fz_maxi(number, 1);
break;
case 'b':
number = fz_maxi(number, 1);
while (number--) smart_move_backward();
break;
case ' ':
number = fz_maxi(number, 1);
while (number--) smart_move_forward();
break;
case 'g':
jump_to_page(number - 1);
break;
case 'G':
jump_to_page(fz_count_pages(ctx, doc) - 1);
break;
case '+':
currentzoom = zoom_in(currentzoom);
break;
case '-':
currentzoom = zoom_out(currentzoom);
break;
case '[':
currentrotate += 90;
break;
case ']':
currentrotate -= 90;
break;
case 'l':
showlinks = !showlinks;
break;
case 'i':
showinfo = !showinfo;
break;
case '/':
search_dir = 1;
showsearch = 1;
search_input.p = search_input.text;
search_input.q = search_input.end;
break;
case '?':
search_dir = -1;
showsearch = 1;
search_input.p = search_input.text;
search_input.q = search_input.end;
break;
case KEY_UP:
scroll_y -= 10;
break;
case KEY_DOWN:
scroll_y += 10;
break;
case KEY_LEFT:
scroll_x -= 10;
break;
case KEY_RIGHT:
scroll_x += 10;
break;
}
if (ui.key >= '0' && ui.key <= '9')
number = number * 10 + ui.key - '0';
else
number = 0;
currentpage = fz_clampi(currentpage, 0, fz_count_pages(ctx, doc) - 1);
currentzoom = fz_clamp(currentzoom, MINRES, MAXRES);
while (currentrotate < 0) currentrotate += 360;
while (currentrotate >= 360) currentrotate -= 360;
if (search_hit_page != currentpage)
search_hit_page = -1; /* clear highlights when navigating */
ui_needs_update = 1;
ui.key = 0; /* we ate the key event, so zap it */
}
}
static void run_main_loop(void)
{
glViewport(0, 0, window_w, window_h);
glClearColor(0.3f, 0.3f, 0.3f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, window_w, window_h, 0, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
ui_begin();
if (search_active)
{
float start_time = glfwGetTime();
if (ui.key == KEY_ESCAPE)
search_active = 0;
/* ignore events during search */
ui.key = ui.mod = 0;
ui.down = ui.middle = ui.right = 0;
while (glfwGetTime() < start_time + 0.2)
{
search_hit_count = fz_search_page_number(ctx, doc, search_page, search_needle,
search_hit_bbox, nelem(search_hit_bbox));
if (search_hit_count)
{
search_active = 0;
search_hit_page = search_page;
jump_to_page(search_hit_page);
break;
}
else
{
search_page += search_dir;
if (search_page < 0 || search_page == fz_count_pages(ctx, doc))
{
search_active = 0;
break;
}
}
}
/* keep searching later */
if (search_active)
ui_needs_update = 1;
}
do_app();
canvas_w = window_w - canvas_x;
canvas_h = window_h - canvas_y;
do_canvas();
if (showinfo)
do_info();
if (showoutline)
do_outline(outline, canvas_x);
if (showsearch)
{
int state = ui_input(canvas_x, 0, canvas_x + canvas_w, ui.lineheight+4, &search_input);
if (state == -1)
{
ui.focus = NULL;
showsearch = 0;
}
else if (state == 1)
{
ui.focus = NULL;
showsearch = 0;
search_page = -1;
if (search_needle)
{
fz_free(ctx, search_needle);
search_needle = NULL;
}
if (search_input.end > search_input.text)
{
search_needle = fz_strdup(ctx, search_input.text);
search_active = 1;
search_page = currentpage;
}
}
ui_needs_update = 1;
}
if (search_active)
{
char buf[256];
sprintf(buf, "Searching page %d of %d.", search_page + 1, fz_count_pages(ctx, doc));
ui_label_draw(canvas_x, 0, canvas_x + canvas_w, ui.lineheight+4, buf);
}
ui_end();
glfwSwapBuffers(window);
ogl_assert(ctx, "swap buffers");
}