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-rw-r--r--src/flpsed.cxx78
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 },