diff options
Diffstat (limited to 'src/touchscreengui.cpp')
-rw-r--r-- | src/touchscreengui.cpp | 690 |
1 files changed, 690 insertions, 0 deletions
diff --git a/src/touchscreengui.cpp b/src/touchscreengui.cpp new file mode 100644 index 000000000..a04b7fe5e --- /dev/null +++ b/src/touchscreengui.cpp @@ -0,0 +1,690 @@ +/* +Copyright (C) 2014 sapier + +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 "touchscreengui.h" +#include "irrlichttypes.h" +#include "irr_v2d.h" +#include "log.h" +#include "keycode.h" +#include "settings.h" +#include "gettime.h" +#include "util/numeric.h" +#include "porting.h" + +#include <iostream> +#include <algorithm> + +#include <ISceneCollisionManager.h> + +using namespace irr::core; + +extern Settings *g_settings; + +const char** touchgui_button_imagenames = (const char*[]) { + "up_arrow.png", + "down_arrow.png", + "left_arrow.png", + "right_arrow.png", + "jump_btn.png", + "down.png", + "inventory_btn.png", + "chat_btn.png" +}; + +static irr::EKEY_CODE id2keycode(touch_gui_button_id id) +{ + std::string key = ""; + switch (id) { + case forward_id: + key = "forward"; + break; + case left_id: + key = "left"; + break; + case right_id: + key = "right"; + break; + case backward_id: + key = "backward"; + break; + case jump_id: + key = "jump"; + break; + case inventory_id: + key = "inventory"; + break; + case chat_id: + key = "chat"; + break; + case crunch_id: + key = "sneak"; + break; + } + assert(key != ""); + return keyname_to_keycode(g_settings->get("keymap_" + key).c_str()); +} + +TouchScreenGUI *g_touchscreengui; + +TouchScreenGUI::TouchScreenGUI(IrrlichtDevice *device, IEventReceiver* receiver): + m_device(device), + m_guienv(device->getGUIEnvironment()), + m_camera_yaw(0.0), + m_camera_pitch(0.0), + m_visible(false), + m_move_id(-1), + m_receiver(receiver) +{ + for (unsigned int i=0; i < after_last_element_id; i++) { + m_buttons[i].guibutton = 0; + m_buttons[i].repeatcounter = -1; + } + + m_screensize = m_device->getVideoDriver()->getScreenSize(); +} + +void TouchScreenGUI::loadButtonTexture(button_info* btn, const char* path) +{ + unsigned int tid; + video::ITexture *texture = m_texturesource->getTexture(path,&tid); + if (texture) { + btn->guibutton->setUseAlphaChannel(true); + btn->guibutton->setImage(texture); + btn->guibutton->setPressedImage(texture); + btn->guibutton->setScaleImage(true); + btn->guibutton->setDrawBorder(false); + btn->guibutton->setText(L""); + } +} + +void TouchScreenGUI::initButton(touch_gui_button_id id, rect<s32> button_rect, + std::wstring caption, bool immediate_release ) +{ + + button_info* btn = &m_buttons[id]; + btn->guibutton = m_guienv->addButton(button_rect, 0, id, caption.c_str()); + btn->guibutton->grab(); + btn->repeatcounter = -1; + btn->keycode = id2keycode(id); + btn->immediate_release = immediate_release; + btn->ids.clear(); + + loadButtonTexture(btn,touchgui_button_imagenames[id]); +} + +static int getMaxControlPadSize(float density) { + return 200 * density * g_settings->getFloat("gui_scaling"); +} + +void TouchScreenGUI::init(ISimpleTextureSource* tsrc, float density) +{ + assert(tsrc != 0); + + u32 control_pad_size = + MYMIN((2 * m_screensize.Y) / 3,getMaxControlPadSize(density)); + + u32 button_size = control_pad_size / 3; + m_visible = true; + m_texturesource = tsrc; + m_control_pad_rect = rect<s32>(0, m_screensize.Y - 3 * button_size, + 3 * button_size, m_screensize.Y); + /* + draw control pad + 0 1 2 + 3 4 5 + for now only 0, 1, 2, and 4 are used + */ + int number = 0; + for (int y = 0; y < 2; ++y) + for (int x = 0; x < 3; ++x, ++number) { + rect<s32> button_rect( + x * button_size, m_screensize.Y - button_size * (2 - y), + (x + 1) * button_size, m_screensize.Y - button_size * (1 - y) + ); + touch_gui_button_id id = after_last_element_id; + std::wstring caption; + switch (number) { + case 0: + id = left_id; + caption = L"<"; + break; + case 1: + id = forward_id; + caption = L"^"; + break; + case 2: + id = right_id; + caption = L">"; + break; + case 4: + id = backward_id; + caption = L"v"; + break; + } + if (id != after_last_element_id) { + initButton(id, button_rect, caption, false); + } + } + + /* init inventory button */ + initButton(inventory_id, + rect<s32>(0, m_screensize.Y - (button_size/2), + (button_size/2), m_screensize.Y), L"inv", true); + + /* init jump button */ + initButton(jump_id, + rect<s32>(m_screensize.X-(1.75*button_size), + m_screensize.Y - (0.5*button_size), + m_screensize.X-(0.25*button_size), + m_screensize.Y), + L"x",false); + + /* init crunch button */ + initButton(crunch_id, + rect<s32>(m_screensize.X-(3.25*button_size), + m_screensize.Y - (0.5*button_size), + m_screensize.X-(1.75*button_size), + m_screensize.Y), + L"H",false); + + /* init chat button */ + initButton(chat_id, + rect<s32>(m_screensize.X-(1.5*button_size), 0, + m_screensize.X, button_size), + L"Chat", true); +} + +touch_gui_button_id TouchScreenGUI::getButtonID(s32 x, s32 y) +{ + IGUIElement* rootguielement = m_guienv->getRootGUIElement(); + + if (rootguielement != NULL) { + gui::IGUIElement *element = + rootguielement->getElementFromPoint(core::position2d<s32>(x,y)); + + if (element) { + for (unsigned int i=0; i < after_last_element_id; i++) { + if (element == m_buttons[i].guibutton) { + return (touch_gui_button_id) i; + } + } + } + } + return after_last_element_id; +} + +touch_gui_button_id TouchScreenGUI::getButtonID(int eventID) +{ + for (unsigned int i=0; i < after_last_element_id; i++) { + button_info* btn = &m_buttons[i]; + + std::vector<int>::iterator id = + std::find(btn->ids.begin(),btn->ids.end(), eventID); + + if (id != btn->ids.end()) + return (touch_gui_button_id) i; + } + + return after_last_element_id; +} + +bool TouchScreenGUI::isHUDButton(const SEvent &event) +{ + // check if hud item is pressed + for (std::map<int,rect<s32> >::iterator iter = m_hud_rects.begin(); + iter != m_hud_rects.end(); iter++) { + if (iter->second.isPointInside( + v2s32(event.TouchInput.X, + event.TouchInput.Y) + )) { + if ( iter->first < 8) { + SEvent* translated = new SEvent(); + memset(translated,0,sizeof(SEvent)); + translated->EventType = irr::EET_KEY_INPUT_EVENT; + translated->KeyInput.Key = (irr::EKEY_CODE) (KEY_KEY_1 + iter->first); + translated->KeyInput.Control = false; + translated->KeyInput.Shift = false; + translated->KeyInput.PressedDown = true; + m_receiver->OnEvent(*translated); + m_hud_ids[event.TouchInput.ID] = translated->KeyInput.Key; + delete translated; + return true; + } + } + } + return false; +} + +bool TouchScreenGUI::isReleaseHUDButton(int eventID) +{ + std::map<int,irr::EKEY_CODE>::iterator iter = m_hud_ids.find(eventID); + + if (iter != m_hud_ids.end()) { + SEvent* translated = new SEvent(); + memset(translated,0,sizeof(SEvent)); + translated->EventType = irr::EET_KEY_INPUT_EVENT; + translated->KeyInput.Key = iter->second; + translated->KeyInput.PressedDown = false; + translated->KeyInput.Control = false; + translated->KeyInput.Shift = false; + m_receiver->OnEvent(*translated); + m_hud_ids.erase(iter); + delete translated; + return true; + } + return false; +} + +void TouchScreenGUI::ButtonEvent(touch_gui_button_id button, + int eventID, bool action) +{ + button_info* btn = &m_buttons[button]; + SEvent* translated = new SEvent(); + memset(translated,0,sizeof(SEvent)); + translated->EventType = irr::EET_KEY_INPUT_EVENT; + translated->KeyInput.Key = btn->keycode; + translated->KeyInput.Control = false; + translated->KeyInput.Shift = false; + translated->KeyInput.Char = 0; + + /* add this event */ + if (action) { + assert(std::find(btn->ids.begin(),btn->ids.end(), eventID) == btn->ids.end()); + + btn->ids.push_back(eventID); + + if (btn->ids.size() > 1) return; + + btn->repeatcounter = 0; + translated->KeyInput.PressedDown = true; + translated->KeyInput.Key = btn->keycode; + m_receiver->OnEvent(*translated); + } + /* remove event */ + if ((!action) || (btn->immediate_release)) { + + std::vector<int>::iterator pos = + std::find(btn->ids.begin(),btn->ids.end(), eventID); + /* has to be in touch list */ + assert(pos != btn->ids.end()); + btn->ids.erase(pos); + + if (btn->ids.size() > 0) { return; } + + translated->KeyInput.PressedDown = false; + btn->repeatcounter = -1; + m_receiver->OnEvent(*translated); + } + delete translated; +} + +void TouchScreenGUI::translateEvent(const SEvent &event) +{ + if (!m_visible) { + infostream << "TouchScreenGUI::translateEvent got event but not visible?!" << std::endl; + return; + } + + if (event.EventType != EET_TOUCH_INPUT_EVENT) { + return; + } + + if (event.TouchInput.Event == ETIE_PRESSED_DOWN) { + + /* add to own copy of eventlist ... + * android would provide this information but irrlicht guys don't + * wanna design a efficient interface + */ + id_status toadd; + toadd.id = event.TouchInput.ID; + toadd.X = event.TouchInput.X; + toadd.Y = event.TouchInput.Y; + m_known_ids.push_back(toadd); + + int eventID = event.TouchInput.ID; + + touch_gui_button_id button = + getButtonID(event.TouchInput.X, event.TouchInput.Y); + + /* handle button events */ + if (button != after_last_element_id) { + ButtonEvent(button,eventID,true); + } + else if (isHUDButton(event)) + { + /* already handled in isHUDButton() */ + } + /* handle non button events */ + else { + /* if we don't already have a moving point make this the moving one */ + if (m_move_id == -1) { + m_move_id = event.TouchInput.ID; + m_move_has_really_moved = false; + m_move_downtime = getTimeMs(); + m_move_downlocation = v2s32(event.TouchInput.X, event.TouchInput.Y); + m_move_sent_as_mouse_event = false; + } + } + + m_pointerpos[event.TouchInput.ID] = v2s32(event.TouchInput.X, event.TouchInput.Y); + } + else if (event.TouchInput.Event == ETIE_LEFT_UP) { + verbosestream << "Up event for pointerid: " << event.TouchInput.ID << std::endl; + + touch_gui_button_id button = getButtonID(event.TouchInput.ID); + + /* handle button events */ + if (button != after_last_element_id) { + ButtonEvent(button,event.TouchInput.ID,false); + } + /* handle hud button events */ + else if (isReleaseHUDButton(event.TouchInput.ID)) { + /* nothing to do here */ + } + /* handle the point used for moving view */ + else if (event.TouchInput.ID == m_move_id) { + m_move_id = -1; + + /* if this pointer issued a mouse event issue symmetric release here */ + if (m_move_sent_as_mouse_event) { + SEvent* translated = new SEvent; + memset(translated,0,sizeof(SEvent)); + translated->EventType = EET_MOUSE_INPUT_EVENT; + translated->MouseInput.X = m_move_downlocation.X; + translated->MouseInput.Y = m_move_downlocation.Y; + translated->MouseInput.Shift = false; + translated->MouseInput.Control = false; + translated->MouseInput.ButtonStates = 0; + translated->MouseInput.Event = EMIE_LMOUSE_LEFT_UP; + m_receiver->OnEvent(*translated); + delete translated; + } + else { + /* do double tap detection */ + doubleTapDetection(); + } + } + else { + infostream + << "TouchScreenGUI::translateEvent released unknown button: " + << event.TouchInput.ID << std::endl; + } + + for (std::vector<id_status>::iterator iter = m_known_ids.begin(); + iter != m_known_ids.end(); iter++) { + if (iter->id == event.TouchInput.ID) { + m_known_ids.erase(iter); + break; + } + } + } + else { + assert(event.TouchInput.Event == ETIE_MOVED); + int move_idx = event.TouchInput.ID; + + if (m_pointerpos[event.TouchInput.ID] == + v2s32(event.TouchInput.X, event.TouchInput.Y)) { + return; + } + + if (m_move_id != -1) { + if ((event.TouchInput.ID == m_move_id) && + (!m_move_sent_as_mouse_event)) { + + double distance = sqrt( + (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) * + (m_pointerpos[event.TouchInput.ID].X - event.TouchInput.X) + + (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y) * + (m_pointerpos[event.TouchInput.ID].Y - event.TouchInput.Y)); + + if ((distance > g_settings->getU16("touchscreen_threshold")) || + (m_move_has_really_moved)) { + m_move_has_really_moved = true; + s32 X = event.TouchInput.X; + s32 Y = event.TouchInput.Y; + + // update camera_yaw and camera_pitch + s32 dx = X - m_pointerpos[event.TouchInput.ID].X; + s32 dy = Y - m_pointerpos[event.TouchInput.ID].Y; + + /* adapt to similar behaviour as pc screen */ + double d = g_settings->getFloat("mouse_sensitivity") *4; + double old_yaw = m_camera_yaw; + double old_pitch = m_camera_pitch; + + m_camera_yaw -= dx * d; + m_camera_pitch = MYMIN(MYMAX( m_camera_pitch + (dy * d),-180),180); + + while (m_camera_yaw < 0) + m_camera_yaw += 360; + + while (m_camera_yaw > 360) + m_camera_yaw -= 360; + + // update shootline + m_shootline = m_device + ->getSceneManager() + ->getSceneCollisionManager() + ->getRayFromScreenCoordinates(v2s32(X, Y)); + m_pointerpos[event.TouchInput.ID] = v2s32(X, Y); + } + } + else if ((event.TouchInput.ID == m_move_id) && + (m_move_sent_as_mouse_event)) { + m_shootline = m_device + ->getSceneManager() + ->getSceneCollisionManager() + ->getRayFromScreenCoordinates( + v2s32(event.TouchInput.X,event.TouchInput.Y)); + } + } + else { + handleChangedButton(event); + } + } +} + +void TouchScreenGUI::handleChangedButton(const SEvent &event) +{ + for (unsigned int i = 0; i < after_last_element_id; i++) { + + if (m_buttons[i].ids.empty()) { + continue; + } + for(std::vector<int>::iterator iter = m_buttons[i].ids.begin(); + iter != m_buttons[i].ids.end(); iter++) { + + if (event.TouchInput.ID == *iter) { + + int current_button_id = + getButtonID(event.TouchInput.X, event.TouchInput.Y); + + if (current_button_id == i) { + continue; + } + + /* remove old button */ + ButtonEvent((touch_gui_button_id) i,*iter,false); + + if (current_button_id == after_last_element_id) { + return; + } + ButtonEvent((touch_gui_button_id) current_button_id,*iter,true); + return; + + } + } + } + + int current_button_id = getButtonID(event.TouchInput.X, event.TouchInput.Y); + + if (current_button_id == after_last_element_id) { + return; + } + + button_info* btn = &m_buttons[current_button_id]; + if (std::find(btn->ids.begin(),btn->ids.end(), event.TouchInput.ID) == btn->ids.end()) { + ButtonEvent((touch_gui_button_id) current_button_id,event.TouchInput.ID,true); + } + +} + +bool TouchScreenGUI::doubleTapDetection() +{ + m_key_events[0].down_time = m_key_events[1].down_time; + m_key_events[0].x = m_key_events[1].x; + m_key_events[0].y = m_key_events[1].y; + m_key_events[1].down_time = m_move_downtime; + m_key_events[1].x = m_move_downlocation.X; + m_key_events[1].y = m_move_downlocation.Y; + + u32 delta = porting::getDeltaMs(m_key_events[0].down_time,getTimeMs()); + if (delta > 400) + return false; + + double distance = sqrt( + (m_key_events[0].x - m_key_events[1].x) * (m_key_events[0].x - m_key_events[1].x) + + (m_key_events[0].y - m_key_events[1].y) * (m_key_events[0].y - m_key_events[1].y)); + + + if (distance >(20 + g_settings->getU16("touchscreen_threshold"))) + return false; + + SEvent* translated = new SEvent(); + memset(translated,0,sizeof(SEvent)); + translated->EventType = EET_MOUSE_INPUT_EVENT; + translated->MouseInput.X = m_key_events[0].x; + translated->MouseInput.Y = m_key_events[0].y; + translated->MouseInput.Shift = false; + translated->MouseInput.Control = false; + translated->MouseInput.ButtonStates = EMBSM_RIGHT; + + // update shootline + m_shootline = m_device + ->getSceneManager() + ->getSceneCollisionManager() + ->getRayFromScreenCoordinates(v2s32(m_key_events[0].x, m_key_events[0].y)); + + translated->MouseInput.Event = EMIE_RMOUSE_PRESSED_DOWN; + verbosestream << "TouchScreenGUI::translateEvent right click press" << std::endl; + m_receiver->OnEvent(*translated); + + translated->MouseInput.ButtonStates = 0; + translated->MouseInput.Event = EMIE_RMOUSE_LEFT_UP; + verbosestream << "TouchScreenGUI::translateEvent right click release" << std::endl; + m_receiver->OnEvent(*translated); + delete translated; + return true; + +} + +TouchScreenGUI::~TouchScreenGUI() +{ + for (unsigned int i=0; i < after_last_element_id; i++) { + button_info* btn = &m_buttons[i]; + if (btn->guibutton != 0) { + btn->guibutton->drop(); + btn->guibutton = NULL; + } + } +} + +void TouchScreenGUI::step(float dtime) +{ + /* simulate keyboard repeats */ + for (unsigned int i=0; i < after_last_element_id; i++) { + button_info* btn = &m_buttons[i]; + + if (btn->ids.size() > 0) { + btn->repeatcounter += dtime; + + if (btn->repeatcounter < 0.2) continue; + + btn->repeatcounter = 0; + SEvent translated; + memset(&translated,0,sizeof(SEvent)); + translated.EventType = irr::EET_KEY_INPUT_EVENT; + translated.KeyInput.Key = btn->keycode; + translated.KeyInput.PressedDown = false; + m_receiver->OnEvent(translated); + + translated.KeyInput.PressedDown = true; + m_receiver->OnEvent(translated); + } + } + + /* if a new placed pointer isn't moved for some time start digging */ + if ((m_move_id != -1) && + (!m_move_has_really_moved) && + (!m_move_sent_as_mouse_event)) { + + u32 delta = porting::getDeltaMs(m_move_downtime,getTimeMs()); + + if (delta > MIN_DIG_TIME_MS) { + m_shootline = m_device + ->getSceneManager() + ->getSceneCollisionManager() + ->getRayFromScreenCoordinates( + v2s32(m_move_downlocation.X,m_move_downlocation.Y)); + + SEvent translated; + memset(&translated,0,sizeof(SEvent)); + translated.EventType = EET_MOUSE_INPUT_EVENT; + translated.MouseInput.X = m_move_downlocation.X; + translated.MouseInput.Y = m_move_downlocation.Y; + translated.MouseInput.Shift = false; + translated.MouseInput.Control = false; + translated.MouseInput.ButtonStates = EMBSM_LEFT; + translated.MouseInput.Event = EMIE_LMOUSE_PRESSED_DOWN; + verbosestream << "TouchScreenGUI::step left click press" << std::endl; + m_receiver->OnEvent(translated); + m_move_sent_as_mouse_event = true; + } + } +} + +void TouchScreenGUI::resetHud() +{ + m_hud_rects.clear(); +} + +void TouchScreenGUI::registerHudItem(int index, const rect<s32> &rect) +{ + m_hud_rects[index] = rect; +} + +void TouchScreenGUI::Toggle(bool visible) +{ + m_visible = visible; + for (unsigned int i=0; i < after_last_element_id; i++) { + button_info* btn = &m_buttons[i]; + if (btn->guibutton != 0) { + btn->guibutton->setVisible(visible); + } + } +} + +void TouchScreenGUI::Hide() +{ + Toggle(false); +} + +void TouchScreenGUI::Show() +{ + Toggle(true); +} |