mirror of
https://github.com/VDR4Arch/vdr.git
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358 lines
7.9 KiB
C
358 lines
7.9 KiB
C
/*
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* osd.c: Abstract On Screen Display layer
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: osd.c 1.17 2001/08/02 14:18:17 kls Exp $
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*/
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#include "osd.h"
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#include <string.h>
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#include "i18n.h"
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// --- cOsdItem --------------------------------------------------------------
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cOsdItem::cOsdItem(eOSState State)
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{
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text = NULL;
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offset = -1;
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state = State;
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fresh = false;
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userColor = false;
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fgColor = clrWhite;
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bgColor = clrBackground;
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}
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cOsdItem::cOsdItem(const char *Text, eOSState State)
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{
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text = NULL;
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offset = -1;
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state = State;
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fresh = false;
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userColor = false;
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fgColor = clrWhite;
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bgColor = clrBackground;
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SetText(Text);
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}
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cOsdItem::~cOsdItem()
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{
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delete text;
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}
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void cOsdItem::SetText(const char *Text, bool Copy)
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{
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delete text;
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text = Copy ? strdup(Text) : Text;
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}
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void cOsdItem::SetColor(eDvbColor FgColor, eDvbColor BgColor)
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{
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userColor = true;
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fgColor = FgColor;
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bgColor = BgColor;
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}
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void cOsdItem::Display(int Offset, eDvbColor FgColor, eDvbColor BgColor)
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{
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if (Offset < 0) {
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FgColor = clrBlack;
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BgColor = clrCyan;
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}
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fresh |= Offset >= 0;
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if (Offset >= 0)
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offset = Offset;
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if (offset >= 0)
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Interface->WriteText(0, offset + 2, text, userColor ? fgColor : FgColor, userColor ? bgColor : BgColor);
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}
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eOSState cOsdItem::ProcessKey(eKeys Key)
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{
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return Key == kOk ? state : osUnknown;
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}
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// --- cOsdMenu --------------------------------------------------------------
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cOsdMenu::cOsdMenu(const char *Title, int c0, int c1, int c2, int c3, int c4)
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{
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hasHotkeys = false;
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visible = false;
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title = strdup(Title);
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cols[0] = c0;
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cols[1] = c1;
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cols[2] = c2;
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cols[3] = c3;
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cols[4] = c4;
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first = 0;
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current = marked = -1;
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subMenu = NULL;
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helpRed = helpGreen = helpYellow = helpBlue = NULL;
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status = NULL;
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Interface->Open();
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}
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cOsdMenu::~cOsdMenu()
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{
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delete title;
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delete subMenu;
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delete status;
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Interface->Clear();
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Interface->Close();
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}
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void cOsdMenu::SetStatus(const char *s)
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{
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delete status;
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status = s ? strdup(s) : NULL;
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if (visible)
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Interface->Status(status);
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}
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void cOsdMenu::SetTitle(const char *Title, bool Copy)
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{
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delete title;
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title = Copy ? strdup(Title) : Title;
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}
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void cOsdMenu::SetHelp(const char *Red, const char *Green, const char *Yellow, const char *Blue)
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{
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// strings are NOT copied - must be constants!!!
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helpRed = Red;
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helpGreen = Green;
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helpYellow = Yellow;
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helpBlue = Blue;
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if (visible)
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Display();
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//XXX Interface->Help(helpRed, helpGreen, helpYellow, helpBlue);
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//XXX must clear unused button areas!
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}
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void cOsdMenu::Del(int Index)
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{
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cList<cOsdItem>::Del(Get(Index));
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if (current == Count())
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current--;
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if (Index == first && first > 0)
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first--;
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}
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void cOsdMenu::Add(cOsdItem *Item, bool Current)
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{
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cList<cOsdItem>::Add(Item);
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if (Current)
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current = Item->Index();
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}
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void cOsdMenu::Display(void)
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{
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visible = true;
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Interface->Clear();
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Interface->SetCols(cols);
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Interface->Title(title);
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Interface->Help(helpRed, helpGreen, helpYellow, helpBlue);
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int count = Count();
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if (count > 0) {
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if (current < 0)
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current = 0; // just for safety - there HAS to be a current item!
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int n = 0;
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if (current - first >= MAXOSDITEMS) {
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first = current - MAXOSDITEMS / 2;
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if (first + MAXOSDITEMS > count)
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first = count - MAXOSDITEMS;
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if (first < 0)
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first = 0;
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}
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for (int i = first; i < count; i++) {
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cOsdItem *item = Get(i);
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if (item)
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item->Display(i - first, i == current ? clrBlack : clrWhite, i == current ? clrCyan : clrBackground);
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if (++n == MAXOSDITEMS) //TODO get this from Interface!!!
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break;
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}
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}
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if (!isempty(status))
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Interface->Status(status);
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}
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void cOsdMenu::RefreshCurrent(void)
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{
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cOsdItem *item = Get(current);
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if (item)
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item->Set();
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}
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void cOsdMenu::DisplayCurrent(bool Current)
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{
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cOsdItem *item = Get(current);
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if (item)
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item->Display(current - first, Current ? clrBlack : clrWhite, Current ? clrCyan : clrBackground);
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}
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void cOsdMenu::Clear(void)
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{
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first = 0;
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current = marked = -1;
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cList<cOsdItem>::Clear();
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}
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bool cOsdMenu::SpecialItem(int idx)
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{
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cOsdItem *item = Get(idx);
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return item && item->HasUserColor();
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}
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void cOsdMenu::CursorUp(void)
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{
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if (current > 0) {
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int tmpCurrent = current;
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while (--tmpCurrent >= 0 && SpecialItem(tmpCurrent));
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if (tmpCurrent < 0)
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return;
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if (tmpCurrent >= first)
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DisplayCurrent(false);
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current = tmpCurrent;
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if (current < first) {
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first = first > MAXOSDITEMS - 1 ? first - (MAXOSDITEMS - 1) : 0;
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if (Setup.MenuScrollPage)
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current = SpecialItem(first) ? first + 1 : first;
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Display();
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}
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else
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DisplayCurrent(true);
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}
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}
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void cOsdMenu::CursorDown(void)
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{
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int last = Count() - 1;
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int lastOnScreen = first + MAXOSDITEMS - 1;
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if (current < last) {
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int tmpCurrent = current;
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while (++tmpCurrent <= last && SpecialItem(tmpCurrent));
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if (tmpCurrent > last)
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return;
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if (tmpCurrent <= lastOnScreen)
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DisplayCurrent(false);
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current = tmpCurrent;
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if (current > lastOnScreen) {
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first += MAXOSDITEMS - 1;
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lastOnScreen = first + MAXOSDITEMS - 1;
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if (lastOnScreen > last) {
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first = last - (MAXOSDITEMS - 1);
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lastOnScreen = last;
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}
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if (Setup.MenuScrollPage)
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current = SpecialItem(lastOnScreen) ? lastOnScreen - 1 : lastOnScreen;
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Display();
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}
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else
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DisplayCurrent(true);
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}
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}
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void cOsdMenu::PageUp(void)
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{
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if (Count() <= MAXOSDITEMS)
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return;
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current -= MAXOSDITEMS;
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first -= MAXOSDITEMS;
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if (first < 0)
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first = current = 0;
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Display();
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DisplayCurrent(true);
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}
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void cOsdMenu::PageDown(void)
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{
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if (Count() <= MAXOSDITEMS)
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return;
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current += MAXOSDITEMS;
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first += MAXOSDITEMS;
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if (current > Count() - 1) {
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current = Count() - 1;
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first = Count() - MAXOSDITEMS;
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}
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Display();
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DisplayCurrent(true);
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}
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void cOsdMenu::Mark(void)
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{
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if (Count() && marked < 0) {
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marked = current;
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SetStatus(tr("Up/Dn for new location - OK to move"));
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}
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}
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eOSState cOsdMenu::HotKey(eKeys Key)
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{
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for (cOsdItem *item = First(); item; item = Next(item)) {
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const char *s = item->Text();
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if (s && (s = skipspace(s)) != NULL) {
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if (*s == Key - k1 + '1') {
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current = item->Index();
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return ProcessKey(kOk);
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}
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}
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}
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return osContinue;
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}
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eOSState cOsdMenu::AddSubMenu(cOsdMenu *SubMenu)
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{
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delete subMenu;
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subMenu = SubMenu;
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subMenu->Display();
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return osContinue; // convenience return value (see cMenuMain)
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}
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eOSState cOsdMenu::ProcessKey(eKeys Key)
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{
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if (subMenu) {
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eOSState state = subMenu->ProcessKey(Key);
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if (state == osBack) {
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delete subMenu;
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subMenu = NULL;
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RefreshCurrent();
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Display();
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state = osContinue;
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}
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return state;
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}
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cOsdItem *item = Get(current);
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if (marked < 0 && item) {
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eOSState state = item->ProcessKey(Key);
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if (state != osUnknown)
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return state;
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}
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switch (Key) {
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case k1...k9: if (hasHotkeys)
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return HotKey(Key);
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break;
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case kUp|k_Repeat:
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case kUp: CursorUp(); break;
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case kDown|k_Repeat:
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case kDown: CursorDown(); break;
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case kLeft|k_Repeat:
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case kLeft: PageUp(); break;
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case kRight|k_Repeat:
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case kRight: PageDown(); break;
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case kBack: return osBack;
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case kOk: if (marked >= 0) {
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SetStatus(NULL);
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if (marked != current)
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Move(marked, current);
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marked = -1;
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break;
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}
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// else run into default
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default: if (marked < 0)
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return osUnknown;
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}
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return osContinue;
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}
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