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vdr/interface.c

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C
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/*
* interface.c: Abstract user interface layer
*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
*
* $Id: interface.c 1.61 2002/12/06 14:13:16 kls Exp $
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*/
#include "interface.h"
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#include <ctype.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "i18n.h"
#include "osd.h"
#include "status.h"
cInterface *Interface = NULL;
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cInterface::cInterface(int SVDRPport)
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{
open = 0;
cols[0] = 0;
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width = height = 0;
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interrupted = false;
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SVDRP = NULL;
if (SVDRPport)
SVDRP = new cSVDRP(SVDRPport);
}
cInterface::~cInterface()
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{
delete SVDRP;
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}
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void cInterface::Open(int NumCols, int NumLines)
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{
if (!open++) {
if (NumCols == 0)
NumCols = Setup.OSDwidth;
if (NumLines == 0)
NumLines = Setup.OSDheight;
cOsd::Open(width = NumCols, height = NumLines);
}
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}
void cInterface::Close(void)
{
if (open == 1)
Clear();
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if (!--open) {
cOsd::Close();
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width = height = 0;
}
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}
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eKeys cInterface::GetKey(bool Wait)
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{
Flush();
if (SVDRP) {
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if (SVDRP->Process())
Wait = false;
if (!open) {
char *message = SVDRP->GetMessage();
if (message) {
Info(message);
free(message);
}
}
}
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return cRemote::Get(Wait ? 1000 : 10);
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}
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eKeys cInterface::Wait(int Seconds, bool KeepChar)
{
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if (Seconds == 0)
Seconds = Setup.OSDMessageTime;
Flush();
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eKeys Key = kNone;
time_t timeout = time(NULL) + Seconds;
for (;;) {
Key = GetKey();
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if ((Key != kNone && (RAWKEY(Key) != kOk || RAWKEY(Key) == Key)) || time(NULL) > timeout || interrupted)
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break;
}
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if (KeepChar && ISRAWKEY(Key))
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cRemote::Put(Key);
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interrupted = false;
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return Key;
}
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void cInterface::Clear(void)
{
if (open)
cOsd::Clear();
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cStatus::MsgOsdClear();
}
void cInterface::ClearEol(int x, int y, eDvbColor Color)
{
if (open)
cOsd::ClrEol(x, y, Color);
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}
void cInterface::Fill(int x, int y, int w, int h, eDvbColor Color)
{
if (open)
cOsd::Fill(x, y, w, h, Color);
}
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void cInterface::SetBitmap(int x, int y, const cBitmap &Bitmap)
{
if (open)
cOsd::SetBitmap(x, y, Bitmap);
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}
void cInterface::Flush(void)
{
if (open)
cOsd::Flush();
}
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void cInterface::SetCols(int *c)
{
for (int i = 0; i < MaxCols; i++) {
cols[i] = *c++;
if (cols[i] == 0)
break;
}
}
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eDvbFont cInterface::SetFont(eDvbFont Font)
{
return cOsd::SetFont(Font);
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}
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char *cInterface::WrapText(const char *Text, int Width, int *Height)
{
// Wraps the Text to make it fit into the area defined by the given Width
// (which is given in character cells).
// The actual number of lines resulting from this operation is returned in
// Height.
// The returned string is newly created on the heap and the caller
// is responsible for deleting it once it is no longer used.
// Wrapping is done by inserting the necessary number of newline
// characters into the string.
int Lines = 1;
char *t = strdup(Text);
char *Blank = NULL;
char *Delim = NULL;
int w = 0;
Width *= cOsd::CellWidth();
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while (*t && t[strlen(t) - 1] == '\n')
t[strlen(t) - 1] = 0; // skips trailing newlines
for (char *p = t; *p; ) {
if (*p == '|')
*p = '\n';
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if (*p == '\n') {
Lines++;
w = 0;
Blank = Delim = NULL;
p++;
continue;
}
else if (isspace(*p))
Blank = p;
int cw = cOsd::Width(*p);
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if (w + cw > Width) {
if (Blank) {
*Blank = '\n';
p = Blank;
continue;
}
else {
// Here's the ugly part, where we don't have any whitespace to
// punch in a newline, so we need to make room for it:
if (Delim)
p = Delim + 1; // let's fall back to the most recent delimiter
char *s = MALLOC(char, strlen(t) + 2); // The additional '\n' plus the terminating '\0'
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int l = p - t;
strncpy(s, t, l);
s[l] = '\n';
strcpy(s + l + 1, p);
free(t);
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t = s;
p = t + l;
continue;
}
}
else
w += cw;
if (strchr("-.,:;!?_", *p)) {
Delim = p;
Blank = NULL;
}
p++;
}
*Height = Lines;
return t;
}
void cInterface::Write(int x, int y, const char *s, eDvbColor FgColor, eDvbColor BgColor)
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{
if (open)
cOsd::Text(x, y, s, FgColor, BgColor);
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}
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void cInterface::WriteText(int x, int y, const char *s, eDvbColor FgColor, eDvbColor BgColor)
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{
if (open) {
ClearEol(x, y, BgColor);
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int col = 0;
for (;;) {
const char *t = strchr(s, '\t');
const char *p = s;
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char buf[1000];
if (t && col < MaxCols && cols[col] > 0) {
unsigned int n = t - s;
if (n >= sizeof(buf))
n = sizeof(buf) - 1;
strncpy(buf, s, n);
buf[n] = 0;
p = buf;
s = t + 1;
}
Write(x, y, p, FgColor, BgColor);
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if (p == s)
break;
x += cols[col++];
}
}
}
void cInterface::Title(const char *s)
{
ClearEol(0, 0, clrCyan);
const char *t = strchr(s, '\t');
if (t) {
char buffer[Width() + 1];
unsigned int n = t - s;
if (n >= sizeof(buffer))
n = sizeof(buffer) - 1;
strn0cpy(buffer, s, n + 1);
Write(1, 0, buffer, clrBlack, clrCyan);
t++;
Write(-(cOsd::WidthInCells(t) + 1), 0, t, clrBlack, clrCyan);
}
else {
int x = (Width() - strlen(s)) / 2;
if (x < 0)
x = 0;
Write(x, 0, s, clrBlack, clrCyan);
}
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cStatus::MsgOsdTitle(s);
}
void cInterface::Status(const char *s, eDvbColor FgColor, eDvbColor BgColor)
{
int Line = (abs(height) == 1) ? 0 : -2;
ClearEol(0, Line, s ? BgColor : clrBackground);
if (s) {
int x = (Width() - strlen(s)) / 2;
if (x < 0)
x = 0;
Write(x, Line, s, FgColor, BgColor);
}
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cStatus::MsgOsdStatusMessage(s);
}
void cInterface::Info(const char *s)
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{
Open(Setup.OSDwidth, -1);
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isyslog("info: %s", s);
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Status(s, clrBlack, clrGreen);
Wait();
Status(NULL);
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Close();
}
void cInterface::Error(const char *s)
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{
Open(Setup.OSDwidth, -1);
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esyslog("ERROR: %s", s);
Status(s, clrWhite, clrRed);
Wait();
Status(NULL);
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Close();
}
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bool cInterface::Confirm(const char *s, int Seconds, bool WaitForTimeout)
{
Open(Setup.OSDwidth, -1);
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isyslog("confirm: %s", s);
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Status(s, clrBlack, clrYellow);
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eKeys k = Wait(Seconds);
bool result = WaitForTimeout ? k == kNone : k == kOk;
Status(NULL);
Close();
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isyslog("%sconfirmed", result ? "" : "not ");
return result;
}
void cInterface::HelpButton(int Index, const char *Text, eDvbColor FgColor, eDvbColor BgColor)
{
if (open) {
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const int w = Width() / 4;
cOsd::Fill(Index * w, -1, w, 1, Text ? BgColor : clrBackground);
if (Text) {
int l = (w - int(strlen(Text))) / 2;
if (l < 0)
l = 0;
cOsd::Text(Index * w + l, -1, Text, FgColor, BgColor);
}
}
}
void cInterface::Help(const char *Red, const char *Green, const char *Yellow, const char *Blue)
{
HelpButton(0, Red, clrBlack, clrRed);
HelpButton(1, Green, clrBlack, clrGreen);
HelpButton(2, Yellow, clrBlack, clrYellow);
HelpButton(3, Blue, clrWhite, clrBlue);
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cStatus::MsgOsdHelpKeys(Red, Green, Yellow, Blue);
}
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void cInterface::QueryKeys(cRemote *Remote)
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{
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WriteText(1, 3, tr("Phase 1: Detecting RC code type"));
WriteText(1, 5, tr("Press any key on the RC unit"));
Flush();
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if (Remote->Initialize()) {
WriteText(1, 5, tr("RC code detected!"));
WriteText(1, 6, tr("Do not press any key..."));
Flush();
sleep(3);
ClearEol(0, 5);
ClearEol(0, 6);
WriteText(1, 3, tr("Phase 2: Learning specific key codes"));
eKeys NewKey = kUp;
while (NewKey != kNone) {
char *Prompt;
asprintf(&Prompt, tr("Press key for '%s'"), tr(cKey::ToString(NewKey)));
WriteText(1, 5, Prompt);
free(Prompt);
cRemote::Clear();
Flush();
for (eKeys k = NewKey; k == NewKey; ) {
char *NewCode = NULL;
eKeys Key = cRemote::Get(100, &NewCode);
switch (Key) {
case kUp: if (NewKey > kUp) {
NewKey = eKeys(NewKey - 1);
cKey *last = Keys.Last();
if (last && last->Key() == NewKey)
Keys.Del(last);
}
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break;
case kDown: WriteText(1, 5, tr("Press 'Up' to confirm"));
WriteText(1, 6, tr("Press 'Down' to continue"));
ClearEol(0, 7);
ClearEol(0, 8);
ClearEol(0, 9);
Flush();
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for (;;) {
Key = cRemote::Get(100);
if (Key == kUp) {
Clear();
return;
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}
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else if (Key == kDown) {
ClearEol(0, 6);
k = kNone; // breaks the outer for() loop
break;
}
}
break;
case kMenu: NewKey = eKeys(NewKey + 1);
break;
case kNone: if (NewCode) {
dsyslog("new %s code: %s = %s", Remote->Name(), NewCode, cKey::ToString(NewKey));
Keys.Add(new cKey(Remote->Name(), NewCode, NewKey));
NewKey = eKeys(NewKey + 1);
free(NewCode);
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}
break;
default: break;
}
}
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if (NewKey > kUp)
WriteText(1, 7, tr("(press 'Up' to go back)"));
else
ClearEol(0, 7);
if (NewKey > kDown)
WriteText(1, 8, tr("(press 'Down' to end key definition)"));
else
ClearEol(0, 8);
if (NewKey > kMenu)
WriteText(1, 9, tr("(press 'Menu' to skip this key)"));
else
ClearEol(0, 9);
}
}
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}
void cInterface::LearnKeys(void)
{
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for (cRemote *Remote = Remotes.First(); Remote; Remote = Remotes.Next(Remote)) {
bool known = Keys.KnowsRemote(Remote->Name());
dsyslog("remote control %s - %s", Remote->Name(), known ? "keys known" : "learning keys");
if (!known) {
Open();
char Headline[Width()];
snprintf(Headline, sizeof(Headline), tr("Learning Remote Control Keys (%s)"), Remote->Name());
Clear();
cRemote::Clear();
WriteText(1, 1, Headline);
cRemote::SetLearning(Remote);
QueryKeys(Remote);
cRemote::SetLearning(NULL);
Clear();
WriteText(1, 1, Headline);
WriteText(1, 3, tr("Phase 3: Saving key codes"));
WriteText(1, 5, tr("Press 'Up' to save, 'Down' to cancel"));
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for (;;) {
eKeys key = GetKey();
if (key == kUp) {
Keys.Save();
Close();
break;
}
else if (key == kDown) {
Keys.Load();
Close();
break;
}
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}
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}
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}
}