minetest/src/guiChatConsole.cpp

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/*
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Minetest
2013-02-24 19:38:45 +01:00
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "guiChatConsole.h"
#include "chat.h"
#include "client.h"
#include "debug.h"
#include "gettime.h"
#include "keycode.h"
#include "settings.h"
#include "porting.h"
#include "client/tile.h"
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#include "fontengine.h"
#include "log.h"
#include "gettext.h"
#include <string>
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#if USE_FREETYPE
#include "xCGUITTFont.h"
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#endif
inline u32 clamp_u8(s32 value)
{
return (u32) MYMIN(MYMAX(value, 0), 255);
}
GUIChatConsole::GUIChatConsole(
gui::IGUIEnvironment* env,
gui::IGUIElement* parent,
s32 id,
ChatBackend* backend,
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Client* client,
IMenuManager* menumgr
):
IGUIElement(gui::EGUIET_ELEMENT, env, parent, id,
core::rect<s32>(0,0,100,100)),
m_chat_backend(backend),
m_client(client),
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m_menumgr(menumgr),
m_animate_time_old(porting::getTimeMs())
{
// load background settings
s32 console_alpha = g_settings->getS32("console_alpha");
m_background_color.setAlpha(clamp_u8(console_alpha));
// load the background texture depending on settings
ITextureSource *tsrc = client->getTextureSource();
if (tsrc->isKnownSourceImage("background_chat.jpg")) {
m_background = tsrc->getTexture("background_chat.jpg");
m_background_color.setRed(255);
m_background_color.setGreen(255);
m_background_color.setBlue(255);
} else {
v3f console_color = g_settings->getV3F("console_color");
m_background_color.setRed(clamp_u8(myround(console_color.X)));
m_background_color.setGreen(clamp_u8(myround(console_color.Y)));
m_background_color.setBlue(clamp_u8(myround(console_color.Z)));
}
m_font = g_fontengine->getFont(FONT_SIZE_UNSPECIFIED, FM_Mono);
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if (!m_font) {
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errorstream << "GUIChatConsole: Unable to load mono font ";
} else {
core::dimension2d<u32> dim = m_font->getDimension(L"M");
m_fontsize = v2u32(dim.Width, dim.Height);
m_font->grab();
}
m_fontsize.X = MYMAX(m_fontsize.X, 1);
m_fontsize.Y = MYMAX(m_fontsize.Y, 1);
// set default cursor options
setCursor(true, true, 2.0, 0.1);
}
GUIChatConsole::~GUIChatConsole()
{
if (m_font)
m_font->drop();
}
void GUIChatConsole::openConsole(f32 scale)
{
assert(scale > 0.0f && scale <= 1.0f);
m_open = true;
m_desired_height_fraction = scale;
m_desired_height = scale * m_screensize.Y;
reformatConsole();
m_animate_time_old = porting::getTimeMs();
IGUIElement::setVisible(true);
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Environment->setFocus(this);
m_menumgr->createdMenu(this);
}
bool GUIChatConsole::isOpen() const
{
return m_open;
}
bool GUIChatConsole::isOpenInhibited() const
{
return m_open_inhibited > 0;
}
void GUIChatConsole::closeConsole()
{
m_open = false;
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Environment->removeFocus(this);
m_menumgr->deletingMenu(this);
}
void GUIChatConsole::closeConsoleAtOnce()
{
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closeConsole();
m_height = 0;
recalculateConsolePosition();
}
f32 GUIChatConsole::getDesiredHeight() const
{
return m_desired_height_fraction;
}
void GUIChatConsole::replaceAndAddToHistory(std::wstring line)
{
ChatPrompt& prompt = m_chat_backend->getPrompt();
prompt.addToHistory(prompt.getLine());
prompt.replace(line);
}
void GUIChatConsole::setCursor(
bool visible, bool blinking, f32 blink_speed, f32 relative_height)
{
if (visible)
{
if (blinking)
{
// leave m_cursor_blink unchanged
m_cursor_blink_speed = blink_speed;
}
else
{
m_cursor_blink = 0x8000; // on
m_cursor_blink_speed = 0.0;
}
}
else
{
m_cursor_blink = 0; // off
m_cursor_blink_speed = 0.0;
}
m_cursor_height = relative_height;
}
void GUIChatConsole::draw()
{
if(!IsVisible)
return;
video::IVideoDriver* driver = Environment->getVideoDriver();
// Check screen size
v2u32 screensize = driver->getScreenSize();
if (screensize != m_screensize)
{
// screen size has changed
// scale current console height to new window size
if (m_screensize.Y != 0)
m_height = m_height * screensize.Y / m_screensize.Y;
m_desired_height = m_desired_height_fraction * m_screensize.Y;
m_screensize = screensize;
reformatConsole();
}
// Animation
u64 now = porting::getTimeMs();
animate(now - m_animate_time_old);
m_animate_time_old = now;
// Draw console elements if visible
if (m_height > 0)
{
drawBackground();
drawText();
drawPrompt();
}
gui::IGUIElement::draw();
}
void GUIChatConsole::reformatConsole()
{
s32 cols = m_screensize.X / m_fontsize.X - 2; // make room for a margin (looks better)
s32 rows = m_desired_height / m_fontsize.Y - 1; // make room for the input prompt
if (cols <= 0 || rows <= 0)
cols = rows = 0;
recalculateConsolePosition();
m_chat_backend->reformat(cols, rows);
}
void GUIChatConsole::recalculateConsolePosition()
{
core::rect<s32> rect(0, 0, m_screensize.X, m_height);
DesiredRect = rect;
recalculateAbsolutePosition(false);
}
void GUIChatConsole::animate(u32 msec)
{
// animate the console height
s32 goal = m_open ? m_desired_height : 0;
// Set invisible if close animation finished (reset by openConsole)
// This function (animate()) is never called once its visibility becomes false so do not
// actually set visible to false before the inhibited period is over
if (!m_open && m_height == 0 && m_open_inhibited == 0)
IGUIElement::setVisible(false);
if (m_height != goal)
{
s32 max_change = msec * m_screensize.Y * (m_height_speed / 1000.0);
if (max_change == 0)
max_change = 1;
if (m_height < goal)
{
// increase height
if (m_height + max_change < goal)
m_height += max_change;
else
m_height = goal;
}
else
{
// decrease height
if (m_height > goal + max_change)
m_height -= max_change;
else
m_height = goal;
}
recalculateConsolePosition();
}
// blink the cursor
if (m_cursor_blink_speed != 0.0)
{
u32 blink_increase = 0x10000 * msec * (m_cursor_blink_speed / 1000.0);
if (blink_increase == 0)
blink_increase = 1;
m_cursor_blink = ((m_cursor_blink + blink_increase) & 0xffff);
}
// decrease open inhibit counter
if (m_open_inhibited > msec)
m_open_inhibited -= msec;
else
m_open_inhibited = 0;
}
void GUIChatConsole::drawBackground()
{
video::IVideoDriver* driver = Environment->getVideoDriver();
if (m_background != NULL)
{
core::rect<s32> sourcerect(0, -m_height, m_screensize.X, 0);
driver->draw2DImage(
m_background,
v2s32(0, 0),
sourcerect,
&AbsoluteClippingRect,
m_background_color,
false);
}
else
{
driver->draw2DRectangle(
m_background_color,
core::rect<s32>(0, 0, m_screensize.X, m_height),
&AbsoluteClippingRect);
}
}
void GUIChatConsole::drawText()
{
if (m_font == NULL)
return;
ChatBuffer& buf = m_chat_backend->getConsoleBuffer();
for (u32 row = 0; row < buf.getRows(); ++row)
{
const ChatFormattedLine& line = buf.getFormattedLine(row);
if (line.fragments.empty())
continue;
s32 line_height = m_fontsize.Y;
s32 y = row * line_height + m_height - m_desired_height;
if (y + line_height < 0)
continue;
for (u32 i = 0; i < line.fragments.size(); ++i)
{
const ChatFormattedFragment& fragment = line.fragments[i];
s32 x = (fragment.column + 1) * m_fontsize.X;
core::rect<s32> destrect(
x, y, x + m_fontsize.X * fragment.text.size(), y + m_fontsize.Y);
#if USE_FREETYPE
// Draw colored text if FreeType is enabled
irr::gui::CGUITTFont *tmp = static_cast<irr::gui::CGUITTFont*>(m_font);
tmp->draw(
fragment.text,
destrect,
video::SColor(255, 255, 255, 255),
false,
false,
&AbsoluteClippingRect);
#else
// Otherwise use standard text
m_font->draw(
fragment.text.c_str(),
destrect,
video::SColor(255, 255, 255, 255),
false,
false,
&AbsoluteClippingRect);
#endif
}
}
}
void GUIChatConsole::drawPrompt()
{
if (!m_font)
return;
u32 row = m_chat_backend->getConsoleBuffer().getRows();
s32 line_height = m_fontsize.Y;
s32 y = row * line_height + m_height - m_desired_height;
ChatPrompt& prompt = m_chat_backend->getPrompt();
std::wstring prompt_text = prompt.getVisiblePortion();
// FIXME Draw string at once, not character by character
// That will only work with the cursor once we have a monospace font
for (u32 i = 0; i < prompt_text.size(); ++i)
{
wchar_t ws[2] = {prompt_text[i], 0};
s32 x = (1 + i) * m_fontsize.X;
core::rect<s32> destrect(
x, y, x + m_fontsize.X, y + m_fontsize.Y);
m_font->draw(
ws,
destrect,
video::SColor(255, 255, 255, 255),
false,
false,
&AbsoluteClippingRect);
}
// Draw the cursor during on periods
if ((m_cursor_blink & 0x8000) != 0)
{
s32 cursor_pos = prompt.getVisibleCursorPosition();
if (cursor_pos >= 0)
{
s32 cursor_len = prompt.getCursorLength();
video::IVideoDriver* driver = Environment->getVideoDriver();
s32 x = (1 + cursor_pos) * m_fontsize.X;
core::rect<s32> destrect(
x,
y + m_fontsize.Y * (1.0 - m_cursor_height),
x + m_fontsize.X * MYMAX(cursor_len, 1),
y + m_fontsize.Y * (cursor_len ? m_cursor_height+1 : 1)
);
video::SColor cursor_color(255,255,255,255);
driver->draw2DRectangle(
cursor_color,
destrect,
&AbsoluteClippingRect);
}
}
}
bool GUIChatConsole::OnEvent(const SEvent& event)
{
ChatPrompt &prompt = m_chat_backend->getPrompt();
if(event.EventType == EET_KEY_INPUT_EVENT && event.KeyInput.PressedDown)
{
// Key input
if(KeyPress(event.KeyInput) == getKeySetting("keymap_console"))
{
closeConsole();
// inhibit open so the_game doesn't reopen immediately
m_open_inhibited = 50;
m_close_on_enter = false;
return true;
}
else if(event.KeyInput.Key == KEY_ESCAPE)
{
closeConsoleAtOnce();
m_close_on_enter = false;
// inhibit open so the_game doesn't reopen immediately
m_open_inhibited = 1; // so the ESCAPE button doesn't open the "pause menu"
return true;
}
else if(event.KeyInput.Key == KEY_PRIOR)
{
m_chat_backend->scrollPageUp();
return true;
}
else if(event.KeyInput.Key == KEY_NEXT)
{
m_chat_backend->scrollPageDown();
return true;
}
else if(event.KeyInput.Key == KEY_RETURN)
{
prompt.addToHistory(prompt.getLine());
std::wstring text = prompt.replace(L"");
m_client->typeChatMessage(text);
if (m_close_on_enter) {
closeConsoleAtOnce();
m_close_on_enter = false;
}
return true;
}
else if(event.KeyInput.Key == KEY_UP)
{
// Up pressed
// Move back in history
prompt.historyPrev();
return true;
}
else if(event.KeyInput.Key == KEY_DOWN)
{
// Down pressed
// Move forward in history
prompt.historyNext();
return true;
}
else if(event.KeyInput.Key == KEY_LEFT || event.KeyInput.Key == KEY_RIGHT)
{
// Left/right pressed
// Move/select character/word to the left depending on control and shift keys
ChatPrompt::CursorOp op = event.KeyInput.Shift ?
ChatPrompt::CURSOROP_SELECT :
ChatPrompt::CURSOROP_MOVE;
ChatPrompt::CursorOpDir dir = event.KeyInput.Key == KEY_LEFT ?
ChatPrompt::CURSOROP_DIR_LEFT :
ChatPrompt::CURSOROP_DIR_RIGHT;
ChatPrompt::CursorOpScope scope = event.KeyInput.Control ?
ChatPrompt::CURSOROP_SCOPE_WORD :
ChatPrompt::CURSOROP_SCOPE_CHARACTER;
prompt.cursorOperation(op, dir, scope);
return true;
}
else if(event.KeyInput.Key == KEY_HOME)
{
// Home pressed
// move to beginning of line
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_LINE);
return true;
}
else if(event.KeyInput.Key == KEY_END)
{
// End pressed
// move to end of line
prompt.cursorOperation(
ChatPrompt::CURSOROP_MOVE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_LINE);
return true;
}
else if(event.KeyInput.Key == KEY_BACK)
{
// Backspace or Ctrl-Backspace pressed
// delete character / word to the left
ChatPrompt::CursorOpScope scope =
event.KeyInput.Control ?
ChatPrompt::CURSOROP_SCOPE_WORD :
ChatPrompt::CURSOROP_SCOPE_CHARACTER;
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT,
scope);
return true;
}
else if(event.KeyInput.Key == KEY_DELETE)
{
// Delete or Ctrl-Delete pressed
// delete character / word to the right
ChatPrompt::CursorOpScope scope =
event.KeyInput.Control ?
ChatPrompt::CURSOROP_SCOPE_WORD :
ChatPrompt::CURSOROP_SCOPE_CHARACTER;
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_RIGHT,
scope);
return true;
}
else if(event.KeyInput.Key == KEY_KEY_A && event.KeyInput.Control)
{
// Ctrl-A pressed
// Select all text
prompt.cursorOperation(
ChatPrompt::CURSOROP_SELECT,
ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
ChatPrompt::CURSOROP_SCOPE_LINE);
return true;
}
else if(event.KeyInput.Key == KEY_KEY_C && event.KeyInput.Control)
{
// Ctrl-C pressed
// Copy text to clipboard
if (prompt.getCursorLength() <= 0)
return true;
std::wstring wselected = prompt.getSelection();
std::string selected(wselected.begin(), wselected.end());
Environment->getOSOperator()->copyToClipboard(selected.c_str());
return true;
}
else if(event.KeyInput.Key == KEY_KEY_V && event.KeyInput.Control)
{
// Ctrl-V pressed
// paste text from clipboard
if (prompt.getCursorLength() > 0) {
// Delete selected section of text
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
ChatPrompt::CURSOROP_SCOPE_SELECTION);
}
IOSOperator *os_operator = Environment->getOSOperator();
const c8 *text = os_operator->getTextFromClipboard();
if (!text)
return true;
std::basic_string<unsigned char> str((const unsigned char*)text);
prompt.input(std::wstring(str.begin(), str.end()));
return true;
}
else if(event.KeyInput.Key == KEY_KEY_X && event.KeyInput.Control)
{
// Ctrl-X pressed
// Cut text to clipboard
if (prompt.getCursorLength() <= 0)
return true;
std::wstring wselected = prompt.getSelection();
std::string selected(wselected.begin(), wselected.end());
Environment->getOSOperator()->copyToClipboard(selected.c_str());
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT, // Ignored
ChatPrompt::CURSOROP_SCOPE_SELECTION);
return true;
}
else if(event.KeyInput.Key == KEY_KEY_U && event.KeyInput.Control)
{
// Ctrl-U pressed
// kill line to left end
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_LEFT,
ChatPrompt::CURSOROP_SCOPE_LINE);
return true;
}
else if(event.KeyInput.Key == KEY_KEY_K && event.KeyInput.Control)
{
// Ctrl-K pressed
// kill line to right end
prompt.cursorOperation(
ChatPrompt::CURSOROP_DELETE,
ChatPrompt::CURSOROP_DIR_RIGHT,
ChatPrompt::CURSOROP_SCOPE_LINE);
return true;
}
else if(event.KeyInput.Key == KEY_TAB)
{
// Tab or Shift-Tab pressed
// Nick completion
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std::list<std::string> names = m_client->getConnectedPlayerNames();
bool backwards = event.KeyInput.Shift;
prompt.nickCompletion(names, backwards);
return true;
} else if (!iswcntrl(event.KeyInput.Char) && !event.KeyInput.Control) {
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#if defined(__linux__) && (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 9)
wchar_t wc = L'_';
mbtowc( &wc, (char *) &event.KeyInput.Char, sizeof(event.KeyInput.Char) );
prompt.input(wc);
#else
prompt.input(event.KeyInput.Char);
#endif
return true;
}
}
else if(event.EventType == EET_MOUSE_INPUT_EVENT)
{
if(event.MouseInput.Event == EMIE_MOUSE_WHEEL)
{
s32 rows = myround(-3.0 * event.MouseInput.Wheel);
m_chat_backend->scroll(rows);
}
}
return Parent ? Parent->OnEvent(event) : false;
}
void GUIChatConsole::setVisible(bool visible)
{
m_open = visible;
IGUIElement::setVisible(visible);
if (!visible) {
m_height = 0;
recalculateConsolePosition();
}
}