diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/flpsed.cxx | 78 |
1 files changed, 72 insertions, 6 deletions
diff --git a/src/flpsed.cxx b/src/flpsed.cxx index ca9d1d6..e98a73f 100644 --- a/src/flpsed.cxx +++ b/src/flpsed.cxx @@ -25,6 +25,8 @@ #include <FL/Fl_Color_Chooser.H> #include <FL/Fl_Hold_Browser.H> +#include <assert.h> + #include "PSEditor.H" #include "util.h" #include "../config.h" @@ -70,12 +72,42 @@ confirm_overwrite(const char *f) { char *filename = NULL; + +void scroll_to_begin() { + assert(scroll); + + scroll->position(0, 0); + scroll->redraw(); +} + + +void scroll_to_end() { + assert(scroll && psed_p); + + scroll->position(0, psed_p->h() - scroll->h()); + scroll->redraw(); +} + + void page_sel_cb(Fl_Widget *w, void *) { - int p = page_sel->value(); - if (p > 0) + int new_page, old_page; + + assert(page_sel && psed_p); + + new_page = page_sel->value(); + old_page = psed_p->get_page(); + + if (new_page > 0 && new_page != old_page) { psed_p->load_page(page_sel->value()); + + if(old_page < new_page) + scroll_to_begin(); + else if(old_page > new_page) + scroll_to_end(); + } } + void page_sel_fill() { char buf[128]; int p = psed_p->get_pages(); @@ -193,13 +225,48 @@ void import_cb() { void first_cb() { psed_p->load(); page_sel->select(psed_p->get_page()); + scroll_to_begin(); +} + + +void last_cb() { + int pg = psed_p->get_pages(); + + if(psed_p->get_page() == pg) + return; + + psed_p->load_page(pg); + page_sel->select(psed_p->get_page()); + scroll_to_begin(); } + void next_cb() { + int pg = psed_p->get_page(); + psed_p->next(); + + if(psed_p->get_page() == pg) + return; + page_sel->select(psed_p->get_page()); + scroll_to_begin(); } + +void prev_cb() { + int pg = psed_p->get_page(); + + psed_p->prev(); + + if(psed_p->get_page() == pg) + return; + + page_sel->select(psed_p->get_page()); + scroll_to_end(); +} + + void quit_cb() { if (!check_save()) return; @@ -314,10 +381,7 @@ void zoom_cb(Fl_Widget *w, void *) { if (m) { if (psed_p) { psed_p->zoom(atoi(m->label())); - if (scroll) { - scroll->position(0,0); - scroll->redraw(); - } + scroll_to_begin(); } } } @@ -352,7 +416,9 @@ Fl_Menu_Item menuitems[] = { { "&Page", 0, 0, 0, FL_SUBMENU }, { "&First", FL_CTRL + 'f', (Fl_Callback *)first_cb }, + { "&Last", FL_CTRL + 'l', (Fl_Callback *)last_cb }, { "&Next", FL_CTRL + 'n', (Fl_Callback *)next_cb }, + { "P&revious", FL_CTRL + 'r', (Fl_Callback *)prev_cb }, { 0 }, { "&Zoom", 0, 0, 0, FL_SUBMENU }, |