LRESULT CWndPrompt::WindowProc(HWND hRealWnd, UINT msg, WPARAM wp, LPARAM lp)
{
switch (msg)
{
case WM_KILLFOCUS:
case WM_SETFOCUS:
if (CWinClasses::IsEditControl(hRealWnd) && WantPrompt(FALSE))
Invalidate();
break;
case WM_PRINT:
{
LRESULT lr = CSubclassWnd::WindowProc(hRealWnd, msg, wp, lp);
DrawPrompt((HDC)wp);
return lr;
}
break;
case WM_PAINT:
{
LRESULT lr = CSubclassWnd::WindowProc(hRealWnd, msg, wp, lp);
DrawPrompt(NULL);
return lr;
}
break;
}
return CSubclassWnd::WindowProc(hRealWnd, msg, wp, lp);
}
void CommandLine::DrawFakeCommand(const string& FakeCommand)
{
DrawPrompt();
SetColor(COL_COMMANDLINE);
// TODO: wrap & scroll if too long
Text(FakeCommand);
}
//*****************************************************************************
//
// Initialize the application interface.
//
//*****************************************************************************
void
UIInit(uint32_t ui32SysClock)
{
//
// Initialize the display driver.
//
Kentec320x240x16_SSD2119Init(ui32SysClock);
//
// Initialize the graphics context.
//
GrContextInit(&g_sContext, &g_sKentec320x240x16_SSD2119);
//
// Draw the application frame.
//
FrameDraw(&g_sContext, "usb-host-keyboard");
//
// Set the font for the application.
//
GrContextFontSet(&g_sContext, g_psFontFixed6x8);
//
// Calculate the number of characters that will fit on a line.
// Make sure to leave a small border for the text box.
//
g_ui32CharsPerLine = (GrContextDpyWidthGet(&g_sContext) - 16) /
GrFontMaxWidthGet(g_psFontFixed6x8);
//
// Calculate the number of lines per usable text screen. This requires
// taking off space for the top and bottom banners and adding a small bit
// for a border.
//
g_ui32LinesPerScreen = (GrContextDpyHeightGet(&g_sContext) -
(2*(DISPLAY_BANNER_HEIGHT + 1)) -
BUTTON_HEIGHT) / GrFontHeightGet(g_psFontFixed6x8);
//
// Set up the text scrolling variables.
//
g_ui32CurrentLine = 0;
g_ui32EntryLine = 0;
//
// Draw the initial prompt on the screen.
//
DrawPrompt();
//
// Initial update of the screen.
//
UIUpdateStatus();
}
void CommandLine::DisplayObject()
{
_OT(SysLog(L"[%p] CommandLine::DisplayObject()",this));
const auto CurLength = DrawPrompt();
CmdStr.SetObjectColor(COL_COMMANDLINE,COL_COMMANDLINESELECTED);
CmdStr.SetPosition(m_X1 + static_cast<int>(CurLength), m_Y1, m_X2, m_Y2);
CmdStr.Show();
GotoXY(m_X2+1,m_Y1);
SetColor(COL_COMMANDLINEPREFIX);
Text(L'\x2191'); // up arrow
}
//*****************************************************************************
//
// This function prints the character out the screen and into the command
// buffer.
//
// ucChar is the character to print out.
//
// This function handles all of the detail of printing a character to the
// screen and into the command line buffer.
//
// No return value.
//
//*****************************************************************************
void
UIPrintChar(const char cChar)
{
bool bNewLine;
int32_t i32Idx;
GrContextForegroundSet(&g_sContext, ClrWhite);
bNewLine = true;
//
// Allow new lines to cause the column to go back to zero.
//
if(cChar != '\n') {
//
// Handle when receiving a backspace character.
//
if(cChar != ASCII_BACKSPACE) {
//
// This is not a backspace so print the character to the screen.
//
GrStringDraw(&g_sContext, &cChar, 1,
DISPLAY_TEXT_BORDER_H +
(GrFontMaxWidthGet(g_psFontFixed6x8) * g_ui32Column),
DISPLAY_BANNER_HEIGHT + DISPLAY_TEXT_BORDER +
(g_ui32EntryLine * GrFontHeightGet(g_psFontFixed6x8)),
1);
g_ppcLines[g_ui32CurrentLine][g_ui32Column] = cChar;
if(g_ui32Column < g_ui32CharsPerLine) {
//
// No line wrap yet so move one column over.
//
g_ui32Column++;
bNewLine = false;
}
} else {
//
// We got a backspace. If we are at the top left of the screen,
// return since we don't need to do anything.
//
if(g_ui32Column || g_ui32EntryLine) {
//
// Adjust the cursor position to erase the last character.
//
if(g_ui32Column > 2) {
g_ui32Column--;
}
//
// Print a space at this position then return without fixing up
// the cursor again.
//
GrStringDraw(&g_sContext, " ", 1,
DISPLAY_TEXT_BORDER_H +
(GrFontMaxWidthGet(g_psFontFixed6x8) * g_ui32Column),
DISPLAY_BANNER_HEIGHT + DISPLAY_TEXT_BORDER +
(g_ui32EntryLine * GrFontHeightGet(g_psFontFixed6x8)),
true);
g_ppcLines[g_ui32CurrentLine][g_ui32Column] = ' ';
}
bNewLine = false;
}
}
//
// .
//
if(bNewLine) {
g_ui32Column = 0;
if(g_ui32EntryLine < (MAX_LINES - 1)) {
g_ui32EntryLine++;
} else {
ScrollText();
}
g_ui32CurrentLine++;
//
// The line has gone past the end so go back to the first line.
//
if(g_ui32CurrentLine >= MAX_LINES) {
g_ui32CurrentLine = 0;
}
//
// Add a prompt to the new line.
//
if(cChar == '\n') {
DrawPrompt();
} else {
//
// Clear out the current line.
//
for(i32Idx = 0; i32Idx < MAX_COLUMNS - 1; i32Idx++) {
g_ppcLines[g_ui32CurrentLine][i32Idx] = ' ';
}
g_ppcLines[g_ui32CurrentLine][i32Idx] = 0;
GrStringDraw(&g_sContext, g_ppcLines[g_ui32CurrentLine],
strlen(g_ppcLines[g_ui32CurrentLine]),
DISPLAY_TEXT_BORDER_H,
DISPLAY_BANNER_HEIGHT + DISPLAY_TEXT_BORDER +
(g_ui32EntryLine * GrFontHeightGet(g_psFontFixed6x8)),
1);
}
}
}
