EKeyboard.cpp

#include "EKeyboard.hpp"
 
using namespace std;
 
EKeyboard::EKeyboard() : EKeyboard::EKeyboard(NULL)
{
    storeOwnText = true;
}
 
EKeyboard::EKeyboard(std::function<void(char)> typeAction)
{
    this->x = 30;
    this->y = SCREEN_HEIGHT - 420;
 
    this->width = SCREEN_WIDTH - 380;
 
    this->typeAction = typeAction;
 
    curRow = index = -1;
    this->isAbsolute = true;
 
    // position the EKeyboard based on this x and y
    updateSize();
}
 
void EKeyboard::render(Element* parent)
{
    if (hidden || immersiveMode)
        return;
 
    CST_Rect dimens = { this->x, this->y, this->width + 305, this->height + 140 };
 
    auto renderer = getRenderer();
 
    CST_SetDrawColor(renderer, { 0xf9, 0xf9, 0xf9, 0xFF });
    if (hasRoundedKeys) {
        CST_SetDrawColor(renderer, { 0xdd, 0xdd, 0xdd, 0xFF });
 
        // rounded keys keyboard is full screen width
        dimens.x = 0;
        dimens.y -= 15;
        dimens.w = RootDisplay::screenWidth;
    }
 
    CST_FillRect(renderer, &dimens);
 
    for (int y = 0; y < rowCount(); y++)
        for (int x = 0; x < rowLength(y) + 1; x++)
        {
            CST_Rect dimens2 = { this->x + kXPad + x * kXOff + y * yYOff, this->y + kYPad + y * ySpacing, keyWidth, keyWidth };
            if (this->hasRoundedKeys) {
                CST_roundedBoxRGBA(renderer, dimens2.x, dimens2.y, dimens2.x + dimens2.w, dimens2.y + dimens2.h, 20, 0xee, 0xee, 0xee, 0xff);
            } else {
                CST_SetDrawColor(renderer, { 0xf4, 0xf4, 0xf4, 0xff });
                CST_FillRect(renderer, &dimens2);
            }
 
            // draw the letters with fontcache, for rounded keys
            if (hasRoundedKeys) {
                char curChar = rows[y]->at(x*2);
                auto curCharStr = std::string(1, curChar);
                int fHeight = CST_GetFontHeight(roundKeyFont, curCharStr.c_str());
                int fWidth = CST_GetFontWidth(roundKeyFont, curCharStr.c_str());
                CST_DrawFont(
                    roundKeyFont,
                    renderer,
                    dimens2.x + dimens2.w/2 - fWidth/2,
                    dimens2.y + dimens2.h/2 - fHeight/2,
                    curCharStr.c_str()
                );
            }
        }
 
    CST_Rect dimensSpace = { this->x + sPos, this->y + dHeight, sWidth, textSize };
    CST_Rect dimensEnter = { this->x + enterPos, this->y + enterHeight, enterWidth, (int)(1.5 * textSize) };
    CST_Rect dimensTab = { this->x + dPos, this->y + enterHeight, enterWidth, (int)(1.5 * textSize) };
 
    // if there's a highlighted piece set, color it in
    if (curRow >= 0 || index >= 0)
    {
        CST_Rect dimens2 = { this->x + kXPad + index * kXOff + curRow * yYOff, this->y + kYPad + curRow * ySpacing, keyWidth, keyWidth };
 
        if (curRow >= rowCount())
        {
            switch (index)
            {
                case 0:
                    dimens2 = dimensTab;
                    break;
                case 1:
                    // if we're on SPACE, expand the dimens width of the highlighted button
                    dimens2 = dimensSpace;
                    break;
                case 2:
                    // if we're on ENTER, expand the dimens width of the highlighted button
                    dimens2 = dimensEnter;
                    break;
                default:
                    break;
            }
        }
 
        // draw the actual enter/space/tab keys if needed
        if (hasRoundedKeys) {
            CST_roundedBoxRGBA(renderer, dimensSpace.x, dimensSpace.y, dimensSpace.x + dimensSpace.w, dimensSpace.y + dimensSpace.h, 20, 0xee, 0xee, 0xee, 0xff);
            CST_roundedBoxRGBA(renderer, dimensEnter.x, dimensEnter.y, dimensEnter.x + dimensEnter.w, dimensEnter.y + dimensEnter.h, 20, 0xee, 0xee, 0xee, 0xff);
            CST_roundedBoxRGBA(renderer, dimensTab.x, dimensTab.y, dimensTab.x + dimensTab.w, dimensTab.y + dimensTab.h, 20, 0xee, 0xee, 0xee, 0xff);
        } else {
            CST_SetDrawColor(renderer, { 0xf4, 0xf4, 0xf4, 0xff });
            CST_FillRect(renderer, &dimensSpace);
    
            if (!preventEnterAndTab) {
                CST_FillRect(renderer, &dimensEnter);
                CST_FillRect(renderer, &dimensTab);
            }
        }   
 
        // draw the currently selected tile if these index things are set
        if (touchMode && !isTouchDrag)
        {
            if (hasRoundedKeys) {
                CST_roundedBoxRGBA(renderer, dimens2.x, dimens2.y, dimens2.x + dimens2.w, dimens2.y + dimens2.h, 20, 0xad, 0xd8, 0xe6, 0x90);
                CST_roundedRectangleRGBA(renderer, dimens2.x, dimens2.y, dimens2.x + dimens2.w, dimens2.y + dimens2.h, 20, 0x66, 0x7c, 0x89, 0xff);
            } else {
                CST_SetDrawColor(renderer, { 0xad, 0xd8, 0xe6, 0x90 }); // TODO: matches the DEEP_HIGHLIGHT color
                CST_FillRect(renderer, &dimens2);
            }
        }
        else if (hasRoundedKeys) {
            CST_roundedBoxRGBA(renderer, dimens2.x, dimens2.y, dimens2.x + dimens2.w, dimens2.y + dimens2.h, 20, 0xad, 0xd8, 0xe6, 0x90);
            CST_roundedRectangleRGBA(renderer, dimens2.x, dimens2.y, dimens2.x + dimens2.w, dimens2.y + dimens2.h, 20, 0x66, 0x7c, 0x89, 0xff);
        }
        else {
            CST_SetDrawColor(renderer, { 0xff, 0xff, 0xff, 0xff }); // TODO: matches the DEEP_HIGHLIGHT color
            CST_FillRect(renderer, &dimens2);
 
            auto d = dimens2;
            // draw a rectangle that is inlet a little
            for (int x=-2; x<3; x++) {
                CST_rectangleRGBA(renderer, d.x + x, d.y + x, d.x + d.w - x, d.y + d.h - x, 0x10, 0xD9, 0xD9, 0xff);
            }
        }
    }
 
    super::render(this);
}
 
bool EKeyboard::process(InputEvents* event)
{
    InputEvents::bypassKeyEvents = false;
 
    // don't do anything if we're hidden, or there's a sidebar and it's active
    if (hidden)
        return false;
 
    // our keyboard will be processing its own key events (not button events)
    InputEvents::bypassKeyEvents = true;
 
    if (event->type == SDL_KEYDOWN)
        return listenForPhysicalKeys(event);
    if (event->type == SDL_KEYUP && (event->keyCode == SDLK_LSHIFT ||
                                     event->keyCode == SDLK_RSHIFT ||
                                     event->keyCode == SDLK_CAPSLOCK)) {
        shiftOn = false;
        updateSize();
        return true;
    }
 
    // immersive view doesn't use any keyboard touch events
    if (immersiveMode) return false;
 
    if (event->isTouchDown())
    {
        curRow = index = -1;
        touchMode = true;
        isTouchDrag = false;
    }
 
    if (event->isKeyDown()) {
        touchMode = false;
        isTouchDrag = false;
    }
    
    bool ret = false;
    
    // only set touch drag if a selection hasn't been made
    auto prevTouchDrag = isTouchDrag;
    isTouchDrag = (event->isTouchDrag() && (!touchMode || (curRow < 0 && index < 0))) || isTouchDrag;
    if (prevTouchDrag != isTouchDrag && isTouchDrag) {
        // started a drag event, play vibrate
        CST_LowRumble(event, 200);
        ret = true;
    }
 
    if (!touchMode && !isTouchDrag)
    {
        if (curRow < 0 && index < 0)
        {
            // switched into EKeyboard, set to 0 and return
            curRow = 1;
            index = 0;
            return true;
        }
 
        if (event->isKeyDown())
        {
            int lastRow = curRow;
            curRow += (event->held(DOWN_BUTTON) - event->held(UP_BUTTON));
            index += (event->held(RIGHT_BUTTON) - event->held(LEFT_BUTTON));
 
            if (curRow < 0) curRow = 0;
            if (index < 0) index = 0;
            if (curRow >= rowCount() + 1) curRow = rowCount(); // +1 for bottom "row" (tab, space, enter)
            if (curRow == rowCount())
            {
                // go to space key if last index is in the middle of row
                if (lastRow < curRow && index > 0 && index < rowLength(lastRow))
                {
                    index = 1;
                }
 
                // tab key
                if (index < 0) index = 0;
 
                // enter key
                if (index > 2) index = 2;
            }
            else
            {
                if (index > rowLength(curRow))
                    index = rowLength(curRow);
 
                if (lastRow == rowCount()) {
                    switch (index)
                    {
                        case 0: //tab
                            index = 0;
                            break;
                        case 1: // space
                            // go to middle of current row
                            index = rowLength(curRow) / 2;
                            break;
                        case 2: // enter
                            // go to end of current row
                            index = rowLength(curRow);
                            break;
                        default:
                            break;
                    }
                }
            }
 
            if (event->held(A_BUTTON))
            {
                // space bar and enter key
                if (curRow >= rowCount())
                {
                    switch (index)
                    {
                        case 0:
                            just_type('\t');
                            break;
                        case 1:
                            just_type(' ');
                            break;
                        case 2:
                            just_type('\n');
                            break;
                        default:
                            break;
                    }
                    return true;
                }
 
                type(curRow, index);
            }
 
            // updateView();
            return true;
        }
 
        return false;
    }
 
    int extWidth = width + 305;
 
    if ((event->isTouchDown() || event->isTouchDrag()) && event->touchIn(this->x, this->y, extWidth, height + 200))
    {
        for (int y = 0; y < rowCount(); y++)
            for (int x = 0; x < rowLength(y) + 1; x++) {
                auto xStart = this->x + kXPad + x * kXOff + y * yYOff;
                auto yStart = this->y + kYPad + y * ySpacing;
                if (event->touchIn(xStart, yStart, keyWidth, keyWidth))
                {
                    ret |= true;
                    curRow = y;
                    index = x;
                }
            }
        return true;
    }
 
    if (event->isTouchUp())
    {
        // only proceed if we've been touchdown'd
        // reset current row and info
        curRow = -1;
        index = -1;
 
        if (event->touchIn(this->x, this->y, extWidth, height + 200))
        {
 
            for (int y = 0; y < rowCount(); y++)
                for (int x = 0; x < rowLength(y) + 1; x++)
                    if (event->touchIn(this->x + kXPad + x * kXOff + y * yYOff, this->y + kYPad + y * ySpacing, keyWidth, keyWidth))
                    {
                        ret |= true;
                        type(y, x);
                    }
 
            if (event->touchIn(this->x + dPos, this->y + enterHeight, enterWidth, textSize))
            {
                ret |= true;
                just_type('\t');
            }
 
            if (event->touchIn(this->x + sPos, this->y + dHeight, sWidth, textSize))
            {
                ret |= true;
                just_type(' ');
            }
 
            if (event->touchIn(this->x + enterPos, this->y + enterHeight, enterWidth, textSize))
            {
                ret |= true;
                just_type('\n');
            }
 
            // if (ret)
            //  updateView();
 
            return ret;
        }
 
        return false;
    }
 
    return false;
}
 
bool EKeyboard::listenForPhysicalKeys(InputEvents* e)
{
    int curBreak = 0;
    int offset = 0;
 
    auto keyCode = e->keyCode;
    auto mod = e->mod;
 
    // special keys
    if (keyCode == SDLK_LSHIFT || keyCode == SDLK_RSHIFT || keyCode == SDLK_CAPSLOCK) {
        shiftOn = true;
        updateSize();
        return true;
    }
 
    if (keyCode == SDLK_TAB) {
        just_type('\t');
        return true;
    }
    if (keyCode == SDLK_SPACE) {
        just_type(' ');
        return true;
    }
    if (keyCode == SDLK_RETURN && !preventEnterAndTab) {
        just_type('\n');
        return true;
    }
 
    // alt key will toggle the keyboard, but still allow inputs
    if (keyCode == SDLK_LALT || keyCode == SDLK_RALT) {
        immersiveMode = !immersiveMode;
        return true;
    }
 
    // primary typing loop, handles all the keycodes on our keyboard
    auto roundedOffset = hasRoundedKeys ? 1 : 0;
    for (int x=roundedOffset; x<KEYCODE_COUNT; x++)
    {
        int xx = x - offset;
        int topRowOffset = curBreak == 0 ? roundedOffset : 0;
 
        if (keyCode == usbKeys[x])
        {
            // we got a key down for this code, type our current position
            // and update cursor
            type(curBreak, xx - topRowOffset);
            curRow = curBreak;
            index = xx - topRowOffset;
            return true;
        }
 
        if (xx + 1 >= breaks[curBreak]) {
            curBreak++;
            offset = x + 1;
        }
    }
 
    // below are progammatic invocations of certain features we expect to be there
    // in vgedit
    // TODO: either make these callbacks or internal calls rather than going through SDL event engine
 
    if (keyCode == SDLK_BACKSPACE) {
        // programatically invoke the B button event
        backspace();
        return true;
    }
 
    if (keyCode == SDLK_RETURN && preventEnterAndTab) {
        // if don't allow enter, let's consider RETURN as submitting the type action (hardcoded to X button)
        // TODO: make it its own callback
        SDL_Event sdlevent;
        sdlevent.type = SDL_JOYBUTTONDOWN;
        sdlevent.jbutton.button = SDL_X;
        SDL_PushEvent(&sdlevent);
        return true;
    }
 
    if (keyCode == SDLK_ESCAPE) {
        // dismiss keyboard, also programmatically
        SDL_Event sdlevent;
        sdlevent.type = SDL_JOYBUTTONDOWN;
        sdlevent.jbutton.button = SDL_Y;
        SDL_PushEvent(&sdlevent);
        return true;
    }
 
    return false;
}
 
void EKeyboard::updateSize()
{
    this->elements.clear();
    rows.clear();
 
    this->height = (304 / 900.0) * width;
 
    // set up lots of scaling variables based on the width/height
 
    this->keyWidth = (int)(0.08 * width);
    this->padding = keyWidth / 2.0;
 
    // these field variables are for displaying the QWERTY keys (touching and displaying)
    kXPad = (int)((23 / 400.0) * width);
    kXOff = (int)((36.5 / 400.0) * width) + (900.0 / width) * ( 900.0 != width); // when scaling, adjust our key x offset TODO: probably a guesstimate
    yYOff = (int)((22 / 400.0) * width);
    kYPad = (int)((17 / 135.0) * height);
    ySpacing = (int)((33 / 400.0) * width);
 
    if (hasRoundedKeys) {
        // different positioning for round keyboard
        // TODO: something else
        kXOff = (int)((38 / 400.0) * width) + (900.0 / width) * ( 900.0 != width); // when scaling, adjust our key x offset TODO: probably a guesstimate
        yYOff = (int)((10 / 400.0) * width);
        kYPad = (int)((0 / 135.0) * height);
        ySpacing = (int)((37 / 400.0) * width);
    }
 
    // these local variables position only the text, and has nothing to do with the
    // touch. They should likely be based on the above field variables so those
    // can change quickly
    int kXPad = (int)((30 / 400.0) * width);
    int kXOff = (int)((22 / 400.0) * width);
#ifdef __WIIU__
    // cheeky positioning hack because wiiu screen dimensions are different
    // to properly fix, the above comments would need to be addressed
    int kYPad = (int)((14 / 400.0) * width);
#endif
    int kYOff = (int)((33 / 400.0) * width);
 
    this->textSize = 0.9375 * keyWidth;
 
    // delete, space and enter key dimensions
    dPos = (int)((13 / 400.0) * width);
    dHeight = (int)((85 / 135.0) * height) + 145;
    sPos = (int)((150 / 400.0) * width);
    enterPos = dPos + 1000;
    enterHeight = dHeight - 34;
 
    dWidth = (int)(1.4125 * textSize);
    sWidth = (int)(7.5 * textSize);
    enterWidth = (int)(2.25 * textSize);
 
    // set up the keys vector based on the current EKeyboard selection
    generateEKeyboard();
 
    CST_Color gray = { 0x52, 0x52, 0x52, 0xff };
 
    int targetHeight = -1;
 
    // go through and draw each of the three rows at the right position
    if (!hasRoundedKeys) {
        for (int x = 0; x < rowCount(); x++)
        {
            TextElement* rowText = new TextElement(rows[x]->c_str(), textSize, &gray, ICON);
            // rowText->customFontPath = RAMFS "res/lightsans.ttf";
            if (targetHeight < 0) {
                targetHeight = rowText->height;
            }
            rowText->update(true);
            rowText->position(kXPad + x * kXOff, kYPad + x * kYOff + targetHeight/2 - rowText->height/2);
            this->elements.push_back(rowText);
        }
    }
 
    // text for space, enter, and symbols
    CST_Color grayish = { 0x55, 0x55, 0x55, 0xff };
    TextElement* spaceText = new TextElement("space", 30, &grayish);
    CST_Rect d4 = { this->x + sPos, this->y + dHeight, sWidth, textSize }; // todo: extract out hardcoded rects like this
    spaceText->position(d4.x + d4.w / 2 - spaceText->width / 2 - 15, 345);
    this->elements.push_back(spaceText);
 
    if (!preventEnterAndTab)
    {
        TextElement* enterText = new TextElement("enter", 30, &grayish);
        CST_Rect d3 = { this->x + enterPos, this->y + enterHeight, enterWidth, textSize }; // todo: extract out hardcoded rects like this
        enterText->position(d3.x + d3.w / 2 - enterText->width / 2 - 30, 327);
        this->elements.push_back(enterText);
 
        TextElement* symText = new TextElement(hasRoundedKeys ? "shift" : "tab", 30, &grayish);
        CST_Rect d5 = { this->x + dPos, this->y + enterHeight, enterWidth, textSize }; // todo: extract out hardcoded rects like this
        symText->position(d5.x + d5.w / 2 - symText->width / 2 - 30, 327);
        this->elements.push_back(symText);
    }
}
 
// given a (y, x) pair in the keyboard layout, type the corresponding letter
void EKeyboard::type(int y, int x)
{
    const char input = (*(rows[y]))[x * 2];
    just_type(input);
}
 
// call type action w/ some checks
void EKeyboard::just_type(const char input)
{
    if (preventEnterAndTab && (input == '\n' || input == '\t'))
        return;
 
    // store our own string if we need to
    if (storeOwnText)
        textInput.push_back(input);
 
    // call the underlying type action, if present
    if (typeAction != NULL) {
        typeAction(input);
        return;
    }
}
 
void EKeyboard::generateEKeyboard()
{
    int count = 0;
    string keys;
 
    if (mode == 0)
        keys = string((shiftOn || capsOn) ? upper_keys : lower_keys);
    else
    {
        // depending on the mode, grab a bunch of characters from unicode starting from
        // upside exclamation mark (U+00A1) and onward https://unicode-table.com/en/
        // TODO: don't hardcode amount here, or hardcode a better one
        int offset = 47 * (mode - 1) + 0x00a1;
        char chars[47 + (mode == 2)];
        for (int x = 0; x < 47 + (mode == 2); x++)
        {
            chars[x] = offset + x;
        }
 
        keys = string(chars);
    }
 
    breaks[3] += (mode == 2); // one more key for bottom row of mode 2
 
    for (int& end : breaks)
    {
        auto roundedOffset = (hasRoundedKeys && count == 0) ? 1 : 0;
        string* row = new string(keys.substr(count + roundedOffset, end - roundedOffset));
        for (int x = 1; x < (int)row->size(); x += 2)
        {
            row->insert(row->begin() + x, ' ');
        }
 
        rows.push_back(row);
        count += end;
    }
 
    if (hasRoundedKeys && roundKeyFont == NULL) {
        // load the round key font
        roundKeyFont = CST_CreateFont();
        auto fontPath = RAMFS "res/lightsans.ttf";
        auto renderer = getRenderer();
        CST_LoadFont(roundKeyFont, renderer, fontPath, 40, CST_MakeColor(0,0,0,255), TTF_STYLE_NORMAL);
    }
}
 
void EKeyboard::backspace()
{
    if (storeOwnText) {
        // manage our own internal string
        if (!textInput.empty())
            textInput.pop_back();
        // call out to the typing callback TODO: use a separate callback (see below)
        typeAction('\b'); // not great
        return;
    }
 
    // TODO: use a backspace callback instead of hardcoding a B button event
    // (B is used by vgedit to manage external backspaces)
    SDL_Event sdlevent;
    sdlevent.type = SDL_JOYBUTTONDOWN;
    sdlevent.jbutton.button = SDL_B;
    SDL_PushEvent(&sdlevent);
}
 
const std::string& EKeyboard::getTextInput()
{
    return textInput;
}
 
EKeyboard::~EKeyboard()
{
    InputEvents::bypassKeyEvents = false;
}