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//
// imgui_impl_ios.cpp
// imguiex
#import <OpenGLES/ES3/gl.h>
#import <OpenGLES/ES3/glext.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include "imgui_impl_ios.h"
#include "imgui.h"
#include "uSynergy.h"
// From Carbon HIToolbox/Events.h
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// FIXME: Keyboard mapping is hacked in because Synergy doesn't give us character but only keycode which aren't really portable if you consider keyboard locale. See https://github.com/ocornut/imgui/pull/247
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enum {
kVK_ANSI_A = 0x00,
kVK_ANSI_S = 0x01,
kVK_ANSI_D = 0x02,
kVK_ANSI_F = 0x03,
kVK_ANSI_H = 0x04,
kVK_ANSI_G = 0x05,
kVK_ANSI_Z = 0x06,
kVK_ANSI_X = 0x07,
kVK_ANSI_C = 0x08,
kVK_ANSI_V = 0x09,
kVK_ANSI_B = 0x0B,
kVK_ANSI_Q = 0x0C,
kVK_ANSI_W = 0x0D,
kVK_ANSI_E = 0x0E,
kVK_ANSI_R = 0x0F,
kVK_ANSI_Y = 0x10,
kVK_ANSI_T = 0x11,
kVK_ANSI_1 = 0x12,
kVK_ANSI_2 = 0x13,
kVK_ANSI_3 = 0x14,
kVK_ANSI_4 = 0x15,
kVK_ANSI_6 = 0x16,
kVK_ANSI_5 = 0x17,
kVK_ANSI_Equal = 0x18,
kVK_ANSI_9 = 0x19,
kVK_ANSI_7 = 0x1A,
kVK_ANSI_Minus = 0x1B,
kVK_ANSI_8 = 0x1C,
kVK_ANSI_0 = 0x1D,
kVK_ANSI_RightBracket = 0x1E,
kVK_ANSI_O = 0x1F,
kVK_ANSI_U = 0x20,
kVK_ANSI_LeftBracket = 0x21,
kVK_ANSI_I = 0x22,
kVK_ANSI_P = 0x23,
kVK_ANSI_L = 0x25,
kVK_ANSI_J = 0x26,
kVK_ANSI_Quote = 0x27,
kVK_ANSI_K = 0x28,
kVK_ANSI_Semicolon = 0x29,
kVK_ANSI_Backslash = 0x2A,
kVK_ANSI_Comma = 0x2B,
kVK_ANSI_Slash = 0x2C,
kVK_ANSI_N = 0x2D,
kVK_ANSI_M = 0x2E,
kVK_ANSI_Period = 0x2F,
kVK_ANSI_Grave = 0x32,
kVK_ANSI_KeypadDecimal = 0x41,
kVK_ANSI_KeypadMultiply = 0x43,
kVK_ANSI_KeypadPlus = 0x45,
kVK_ANSI_KeypadClear = 0x47,
kVK_ANSI_KeypadDivide = 0x4B,
kVK_ANSI_KeypadEnter = 0x4C,
kVK_ANSI_KeypadMinus = 0x4E,
kVK_ANSI_KeypadEquals = 0x51,
kVK_ANSI_Keypad0 = 0x52,
kVK_ANSI_Keypad1 = 0x53,
kVK_ANSI_Keypad2 = 0x54,
kVK_ANSI_Keypad3 = 0x55,
kVK_ANSI_Keypad4 = 0x56,
kVK_ANSI_Keypad5 = 0x57,
kVK_ANSI_Keypad6 = 0x58,
kVK_ANSI_Keypad7 = 0x59,
kVK_ANSI_Keypad8 = 0x5B,
kVK_ANSI_Keypad9 = 0x5C
};
/* keycodes for keys that are independent of keyboard layout*/
enum {
kVK_Return = 0x24,
kVK_Tab = 0x30,
kVK_Space = 0x31,
kVK_Delete = 0x33,
kVK_Escape = 0x35,
kVK_Command = 0x37,
kVK_Shift = 0x38,
kVK_CapsLock = 0x39,
kVK_Option = 0x3A,
kVK_Control = 0x3B,
kVK_RightShift = 0x3C,
kVK_RightOption = 0x3D,
kVK_RightControl = 0x3E,
kVK_Function = 0x3F,
kVK_F17 = 0x40,
kVK_VolumeUp = 0x48,
kVK_VolumeDown = 0x49,
kVK_Mute = 0x4A,
kVK_F18 = 0x4F,
kVK_F19 = 0x50,
kVK_F20 = 0x5A,
kVK_F5 = 0x60,
kVK_F6 = 0x61,
kVK_F7 = 0x62,
kVK_F3 = 0x63,
kVK_F8 = 0x64,
kVK_F9 = 0x65,
kVK_F11 = 0x67,
kVK_F13 = 0x69,
kVK_F16 = 0x6A,
kVK_F14 = 0x6B,
kVK_F10 = 0x6D,
kVK_F12 = 0x6F,
kVK_F15 = 0x71,
kVK_Help = 0x72,
kVK_Home = 0x73,
kVK_PageUp = 0x74,
kVK_ForwardDelete = 0x75,
kVK_F4 = 0x76,
kVK_End = 0x77,
kVK_F2 = 0x78,
kVK_PageDown = 0x79,
kVK_F1 = 0x7A,
kVK_LeftArrow = 0x7B,
kVK_RightArrow = 0x7C,
kVK_DownArrow = 0x7D,
kVK_UpArrow = 0x7E
};
static char g_keycodeCharUnshifted[256] = {};
static char g_keycodeCharShifted[256] = {};
//static double g_Time = 0.0f;
static bool g_MousePressed[3] = { false, false, false };
static float g_mouseWheelX = 0.0f;
static float g_mouseWheelY = 0.0f;
static GLuint g_FontTexture = 0;
static int g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
static int g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
static size_t g_VboSize = 0;
static unsigned int g_VboHandle = 0, g_VaoHandle = 0;
static float g_displayScale;
static int usynergy_sockfd;
static bool g_synergyPtrActive = false;
static uint16_t g_mousePosX = 0;
static uint16_t g_mousePosY = 0;
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data);
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bool ImGui_ImplIOS_CreateDeviceObjects();
static NSString *g_serverName;
uSynergyBool ImGui_ConnectFunc(uSynergyCookie cookie)
{
// NOTE: You need to turn off "Use SSL Encryption" in Synergy preferences, since
// uSynergy does not support SSL.
NSLog( @"Connect Func!");
struct addrinfo hints, *res;
// first, load up address structs with getaddrinfo():
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC; // use IPv4 or IPv6, whichever
hints.ai_socktype = SOCK_STREAM;
// get server address
getaddrinfo([g_serverName UTF8String], "24800", &hints, &res);
if (!res)
{
NSLog( @"Could not find server: %@", g_serverName );
return USYNERGY_FALSE;
}
// make a socket:
usynergy_sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
// connect it to the address and port we passed in to getaddrinfo():
int ret = connect(usynergy_sockfd, res->ai_addr, res->ai_addrlen);
if (!ret) {
NSLog( @"Connect suceeded...");
} else {
NSLog( @"Connect failed, %d", ret );
}
return USYNERGY_TRUE;
}
uSynergyBool ImGui_SendFunc(uSynergyCookie cookie, const uint8_t *buffer, int length)
{
// NSLog( @"Send Func" );
send( usynergy_sockfd, buffer, length, 0 );
return USYNERGY_TRUE;
}
uSynergyBool ImGui_RecvFunc(uSynergyCookie cookie, uint8_t *buffer, int maxLength, int* outLength)
{
*outLength = (int)recv( usynergy_sockfd, buffer, maxLength, 0 );
return USYNERGY_TRUE;
}
void ImGui_SleepFunc(uSynergyCookie cookie, int timeMs)
{
usleep( timeMs * 1000 );
}
uint32_t ImGui_GetTimeFunc()
{
struct timeval tv;
gettimeofday(&tv, NULL);
return (int32_t)((tv.tv_sec) * 1000 + (tv.tv_usec) / 1000);
}
void ImGui_TraceFunc(uSynergyCookie cookie, const char *text)
{
puts(text);
}
void ImGui_ScreenActiveCallback(uSynergyCookie cookie, uSynergyBool active)
{
g_synergyPtrActive = active;
// printf( "Synergy: screen activate %s\n", active?"YES":"NO" );
}
void ImGui_MouseCallback(uSynergyCookie cookie, uint16_t x, uint16_t y, int16_t wheelX, int16_t wheelY,
uSynergyBool buttonLeft, uSynergyBool buttonRight, uSynergyBool buttonMiddle)
{
// printf("Synergy: mouse callback %d %d -- wheel %d %d\n", x, y, wheelX, wheelY );
uSynergyContext *ctx = (uSynergyContext*)cookie;
g_mousePosX = x;
g_mousePosY = y;
g_mouseWheelX = wheelX;
g_mouseWheelY = wheelY;
g_MousePressed[0] = buttonLeft;
g_MousePressed[1] = buttonMiddle;
g_MousePressed[2] = buttonRight;
ctx->m_mouseWheelX = 0;
ctx->m_mouseWheelY = 0;
}
void ImGui_KeyboardCallback(uSynergyCookie cookie, uint16_t key,
uint16_t modifiers, uSynergyBool down, uSynergyBool repeat)
{
int scanCode = key-1;
// printf("Synergy: keyboard callback: 0x%02X (%s)", scanCode, down?"true":"false");
ImGuiIO& io = ImGui::GetIO();
io.KeysDown[key] = down;
io.KeyShift = modifiers & USYNERGY_MODIFIER_SHIFT;
io.KeyCtrl = modifiers & USYNERGY_MODIFIER_CTRL;
io.KeyAlt = modifiers & USYNERGY_MODIFIER_ALT;
// Add this as keyboard input
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if ((down) && (key) && (scanCode<256) && !(modifiers & USYNERGY_MODIFIER_CTRL))
{
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// If this key maps to a character input, apply it
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int charForKeycode = (modifiers & USYNERGY_MODIFIER_SHIFT) ? g_keycodeCharShifted[scanCode] : g_keycodeCharUnshifted[scanCode];
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io.AddInputCharacter((unsigned short)charForKeycode);
}
}
void ImGui_JoystickCallback(uSynergyCookie cookie, uint8_t joyNum, uint16_t buttons, int8_t leftStickX, int8_t leftStickY, int8_t rightStickX, int8_t rightStickY)
{
printf("Synergy: joystick callback TODO\n");
}
void ImGui_ClipboardCallback(uSynergyCookie cookie, enum uSynergyClipboardFormat format, const uint8_t *data, uint32_t size)
{
printf("Synergy: clipboard callback TODO\n" );
}
@interface ImGuiHelper ()
{
BOOL _mouseDown;
BOOL _mouseTapped;
CGPoint _touchPos;
uSynergyContext _synergyCtx;
dispatch_queue_t _synergyQueue;
}
@property (nonatomic, weak) UIView *view;
@property (nonatomic, strong) NSString *serverName;
@end
@implementation ImGuiHelper
- (id) initWithView: (UIView *)view
{
self = [super init];
if (self)
{
self.view = view;
[self setupImGuiHooks];
}
return self;
}
- (void)setupKeymaps
{
// The keyboard mapping is a big headache. I tried for a while to find a better way to do this,
// but this was the best I could come up with. There are some device independent API's available
// to convert scan codes to unicode characters, but these are only available on mac and not
// on iOS as far as I can tell (it's part of Carbon). I didn't see any better way to do
// this or any way to get the character codes out of usynergy.
g_keycodeCharUnshifted[ kVK_ANSI_A ]='a';
g_keycodeCharUnshifted[ kVK_ANSI_S ]='s';
g_keycodeCharUnshifted[ kVK_ANSI_D ]='d';
g_keycodeCharUnshifted[ kVK_ANSI_F ]='f';
g_keycodeCharUnshifted[ kVK_ANSI_H ]='h';
g_keycodeCharUnshifted[ kVK_ANSI_G ]='g';
g_keycodeCharUnshifted[ kVK_ANSI_Z ]='z';
g_keycodeCharUnshifted[ kVK_ANSI_X ]='x';
g_keycodeCharUnshifted[ kVK_ANSI_C ]='c';
g_keycodeCharUnshifted[ kVK_ANSI_V ]='v';
g_keycodeCharUnshifted[ kVK_ANSI_B ]='b';
g_keycodeCharUnshifted[ kVK_ANSI_Q ]='q';
g_keycodeCharUnshifted[ kVK_ANSI_W ]='w';
g_keycodeCharUnshifted[ kVK_ANSI_E ]='e';
g_keycodeCharUnshifted[ kVK_ANSI_R ]='r';
g_keycodeCharUnshifted[ kVK_ANSI_Y ]='y';
g_keycodeCharUnshifted[ kVK_ANSI_T ]='t';
g_keycodeCharUnshifted[ kVK_ANSI_1 ]='1';
g_keycodeCharUnshifted[ kVK_ANSI_2 ]='2';
g_keycodeCharUnshifted[ kVK_ANSI_3 ]='3';
g_keycodeCharUnshifted[ kVK_ANSI_4 ]='4';
g_keycodeCharUnshifted[ kVK_ANSI_6 ]='6';
g_keycodeCharUnshifted[ kVK_ANSI_5 ]='5';
g_keycodeCharUnshifted[ kVK_ANSI_Equal ]='=';
g_keycodeCharUnshifted[ kVK_ANSI_9 ]='9';
g_keycodeCharUnshifted[ kVK_ANSI_7 ]='7';
g_keycodeCharUnshifted[ kVK_ANSI_Minus ]='-';
g_keycodeCharUnshifted[ kVK_ANSI_8 ]='8';
g_keycodeCharUnshifted[ kVK_ANSI_0 ]='0';
g_keycodeCharUnshifted[ kVK_ANSI_RightBracket ]=']';
g_keycodeCharUnshifted[ kVK_ANSI_O ]='o';
g_keycodeCharUnshifted[ kVK_ANSI_U ]='u';
g_keycodeCharUnshifted[ kVK_ANSI_LeftBracket ]='[';
g_keycodeCharUnshifted[ kVK_ANSI_I ]='i';
g_keycodeCharUnshifted[ kVK_ANSI_P ]='p';
g_keycodeCharUnshifted[ kVK_ANSI_L ]='l';
g_keycodeCharUnshifted[ kVK_ANSI_J ]='j';
g_keycodeCharUnshifted[ kVK_ANSI_Quote ]='\'';
g_keycodeCharUnshifted[ kVK_ANSI_K ]='k';
g_keycodeCharUnshifted[ kVK_ANSI_Semicolon ]=';';
g_keycodeCharUnshifted[ kVK_ANSI_Backslash ]='\\';
g_keycodeCharUnshifted[ kVK_ANSI_Comma ]=',';
g_keycodeCharUnshifted[ kVK_ANSI_Slash ]='/';
g_keycodeCharUnshifted[ kVK_ANSI_N ]='n';
g_keycodeCharUnshifted[ kVK_ANSI_M ]='m';
g_keycodeCharUnshifted[ kVK_ANSI_Period ]='.';
g_keycodeCharUnshifted[ kVK_ANSI_Grave ]='`';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadDecimal ]='.';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadMultiply ]='*';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadPlus ]='+';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadDivide ]='/';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadEnter ]='\n';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadMinus ]='-';
g_keycodeCharUnshifted[ kVK_ANSI_KeypadEquals ]='=';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad0 ]='0';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad1 ]='1';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad2 ]='2';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad3 ]='3';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad4 ]='4';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad5 ]='5';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad6 ]='6';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad7 ]='7';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad8 ]='8';
g_keycodeCharUnshifted[ kVK_ANSI_Keypad9 ]='9';
g_keycodeCharUnshifted[ kVK_Space ]=' ';
g_keycodeCharShifted[ kVK_ANSI_A ]='A';
g_keycodeCharShifted[ kVK_ANSI_S ]='S';
g_keycodeCharShifted[ kVK_ANSI_D ]='D';
g_keycodeCharShifted[ kVK_ANSI_F ]='F';
g_keycodeCharShifted[ kVK_ANSI_H ]='H';
g_keycodeCharShifted[ kVK_ANSI_G ]='G';
g_keycodeCharShifted[ kVK_ANSI_Z ]='Z';
g_keycodeCharShifted[ kVK_ANSI_X ]='X';
g_keycodeCharShifted[ kVK_ANSI_C ]='C';
g_keycodeCharShifted[ kVK_ANSI_V ]='V';
g_keycodeCharShifted[ kVK_ANSI_B ]='B';
g_keycodeCharShifted[ kVK_ANSI_Q ]='Q';
g_keycodeCharShifted[ kVK_ANSI_W ]='W';
g_keycodeCharShifted[ kVK_ANSI_E ]='E';
g_keycodeCharShifted[ kVK_ANSI_R ]='R';
g_keycodeCharShifted[ kVK_ANSI_Y ]='Y';
g_keycodeCharShifted[ kVK_ANSI_T ]='T';
g_keycodeCharShifted[ kVK_ANSI_1 ]='!';
g_keycodeCharShifted[ kVK_ANSI_2 ]='@';
g_keycodeCharShifted[ kVK_ANSI_3 ]='#';
g_keycodeCharShifted[ kVK_ANSI_4 ]='$';
g_keycodeCharShifted[ kVK_ANSI_6 ]='^';
g_keycodeCharShifted[ kVK_ANSI_5 ]='%';
g_keycodeCharShifted[ kVK_ANSI_Equal ]='+';
g_keycodeCharShifted[ kVK_ANSI_9 ]='(';
g_keycodeCharShifted[ kVK_ANSI_7 ]='&';
g_keycodeCharShifted[ kVK_ANSI_Minus ]='_';
g_keycodeCharShifted[ kVK_ANSI_8 ]='*';
g_keycodeCharShifted[ kVK_ANSI_0 ]=')';
g_keycodeCharShifted[ kVK_ANSI_RightBracket ]='}';
g_keycodeCharShifted[ kVK_ANSI_O ]='O';
g_keycodeCharShifted[ kVK_ANSI_U ]='U';
g_keycodeCharShifted[ kVK_ANSI_LeftBracket ]='{';
g_keycodeCharShifted[ kVK_ANSI_I ]='I';
g_keycodeCharShifted[ kVK_ANSI_P ]='P';
g_keycodeCharShifted[ kVK_ANSI_L ]='L';
g_keycodeCharShifted[ kVK_ANSI_J ]='J';
g_keycodeCharShifted[ kVK_ANSI_Quote ]='\"';
g_keycodeCharShifted[ kVK_ANSI_K ]='K';
g_keycodeCharShifted[ kVK_ANSI_Semicolon ]=':';
g_keycodeCharShifted[ kVK_ANSI_Backslash ]='|';
g_keycodeCharShifted[ kVK_ANSI_Comma ]='<';
g_keycodeCharShifted[ kVK_ANSI_Slash ]='?';
g_keycodeCharShifted[ kVK_ANSI_N ]='N';
g_keycodeCharShifted[ kVK_ANSI_M ]='M';
g_keycodeCharShifted[ kVK_ANSI_Period ]='>';
g_keycodeCharShifted[ kVK_ANSI_Grave ]='~';
g_keycodeCharShifted[ kVK_ANSI_KeypadDecimal ]='.';
g_keycodeCharShifted[ kVK_ANSI_KeypadMultiply ]='*';
g_keycodeCharShifted[ kVK_ANSI_KeypadPlus ]='+';
g_keycodeCharShifted[ kVK_ANSI_KeypadDivide ]='/';
g_keycodeCharShifted[ kVK_ANSI_KeypadEnter ]='\n';
g_keycodeCharShifted[ kVK_ANSI_KeypadMinus ]='-';
g_keycodeCharShifted[ kVK_ANSI_KeypadEquals ]='=';
g_keycodeCharShifted[ kVK_ANSI_Keypad0 ]='0';
g_keycodeCharShifted[ kVK_ANSI_Keypad1 ]='1';
g_keycodeCharShifted[ kVK_ANSI_Keypad2 ]='2';
g_keycodeCharShifted[ kVK_ANSI_Keypad3 ]='3';
g_keycodeCharShifted[ kVK_ANSI_Keypad4 ]='4';
g_keycodeCharShifted[ kVK_ANSI_Keypad5 ]='5';
g_keycodeCharShifted[ kVK_ANSI_Keypad6 ]='6';
g_keycodeCharShifted[ kVK_ANSI_Keypad7 ]='7';
g_keycodeCharShifted[ kVK_ANSI_Keypad8 ]='8';
g_keycodeCharShifted[ kVK_ANSI_Keypad9 ]='9';
g_keycodeCharShifted[ kVK_Space ]=' ';
}
- (void)setupImGuiHooks
{
ImGuiIO &io = ImGui::GetIO();
[self setupKeymaps];
// Account for retina display for glScissor
g_displayScale = [[UIScreen mainScreen] scale];
ImGuiStyle &style = ImGui::GetStyle();
style.TouchExtraPadding = ImVec2( 4.0, 4.0 );
io.RenderDrawListsFn = ImGui_ImplIOS_RenderDrawLists;
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(viewDidPan:) ];
[self.view addGestureRecognizer:panRecognizer];
UITapGestureRecognizer *tapRecoginzer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector( viewDidTap:)];
[self.view addGestureRecognizer:tapRecoginzer];
// Fill out the Synergy key map
// (for some reason synergy scan codes are off by 1)
io.KeyMap[ImGuiKey_Tab] = kVK_Tab+1;
io.KeyMap[ImGuiKey_LeftArrow] = kVK_LeftArrow+1;
io.KeyMap[ImGuiKey_RightArrow] = kVK_RightArrow+1;
io.KeyMap[ImGuiKey_UpArrow] = kVK_UpArrow+1;
io.KeyMap[ImGuiKey_DownArrow] = kVK_DownArrow+1;
io.KeyMap[ImGuiKey_Home] = kVK_Home+1;
io.KeyMap[ImGuiKey_End] = kVK_End+1;
io.KeyMap[ImGuiKey_Delete] = kVK_ForwardDelete+1;
io.KeyMap[ImGuiKey_Backspace] = kVK_Delete+1;
io.KeyMap[ImGuiKey_Enter] = kVK_Return+1;
io.KeyMap[ImGuiKey_Escape] = kVK_Escape+1;
io.KeyMap[ImGuiKey_A] = kVK_ANSI_A+1;
io.KeyMap[ImGuiKey_C] = kVK_ANSI_C+1;
io.KeyMap[ImGuiKey_V] = kVK_ANSI_V+1;
io.KeyMap[ImGuiKey_X] = kVK_ANSI_X+1;
io.KeyMap[ImGuiKey_Y] = kVK_ANSI_Y+1;
io.KeyMap[ImGuiKey_Z] = kVK_ANSI_Z+1;
}
- (void)connectServer: (NSString*)serverName
{
self.serverName = serverName;
g_serverName = serverName;
// Init synergy
NSString *bundleName = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey];
uSynergyInit( &_synergyCtx );
_synergyCtx.m_clientName = strdup( [bundleName UTF8String] );
_synergyCtx.m_clientWidth = self.view.bounds.size.width;
_synergyCtx.m_clientHeight = self.view.bounds.size.height;
_synergyCtx.m_connectFunc = ImGui_ConnectFunc;
_synergyCtx.m_sendFunc = ImGui_SendFunc;
_synergyCtx.m_receiveFunc = ImGui_RecvFunc;
_synergyCtx.m_sleepFunc = ImGui_SleepFunc;
_synergyCtx.m_traceFunc = ImGui_TraceFunc;
_synergyCtx.m_getTimeFunc = ImGui_GetTimeFunc;
_synergyCtx.m_traceFunc = ImGui_TraceFunc;
_synergyCtx.m_screenActiveCallback = ImGui_ScreenActiveCallback;
_synergyCtx.m_mouseCallback = ImGui_MouseCallback;
_synergyCtx.m_keyboardCallback = ImGui_KeyboardCallback;
_synergyCtx.m_cookie = (uSynergyCookie)&_synergyCtx;
// Create a background thread for synergy
_synergyQueue = dispatch_queue_create( "imgui-usynergy", NULL );
dispatch_async( _synergyQueue, ^{
while (1) {
uSynergyUpdate( &_synergyCtx );
}
});
}
- (void)viewDidPan: (UIPanGestureRecognizer *)recognizer
{
if ((recognizer.state == UIGestureRecognizerStateBegan) ||
(recognizer.state == UIGestureRecognizerStateChanged))
{
_mouseDown = YES;
_touchPos = [recognizer locationInView:self.view];
}
else
{
_mouseDown = NO;
_touchPos = CGPointMake( -1, -1 );
}
}
- (void)viewDidTap: (UITapGestureRecognizer*)recognizer
{
_touchPos = [recognizer locationInView:self.view];
_mouseTapped = YES;
}
- (void)render
{
ImGui::Render();
}
- (void)newFrame
{
ImGuiIO& io = ImGui::GetIO();
ImGuiStyle &style = ImGui::GetStyle();
if (!g_FontTexture)
{
ImGui_ImplIOS_CreateDeviceObjects();
}
io.DisplaySize = ImVec2( _view.bounds.size.width, _view.bounds.size.height );
io.MouseDrawCursor = g_synergyPtrActive;
if (g_synergyPtrActive)
{
style.TouchExtraPadding = ImVec2( 0.0, 0.0 );
io.MousePos = ImVec2( g_mousePosX, g_mousePosY );
for (int i=0; i < 3; i++)
{
io.MouseDown[i] = g_MousePressed[i];
}
// This is an arbitrary scaling factor that works for me. Not sure what units these
// mousewheel values from synergy are supposed to be in
io.MouseWheel = g_mouseWheelY / 500.0;
}
else
{
// Synergy not active, use touch events
style.TouchExtraPadding = ImVec2( 4.0, 4.0 );
io.MousePos = ImVec2(_touchPos.x, _touchPos.y );
if ((_mouseDown) || (_mouseTapped))
{
io.MouseDown[0] = true;
_mouseTapped = NO;
}
else
{
io.MouseDown[0] = false;
}
}
ImGui::NewFrame();
}
@end
// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
// If text or lines are blurry when integrating ImGui in your engine:
// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
// NOTE: this is copied pretty much entirely from the opengl3_example, with only minor changes for ES
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static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data)
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{
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if (draw_data->CmdListsCount == 0)
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return;
// Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
GLint last_program, last_texture;
glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
glEnable(GL_BLEND);
glBlendEquation(GL_FUNC_ADD);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glActiveTexture(GL_TEXTURE0);
// Setup orthographic projection matrix
const float width = ImGui::GetIO().DisplaySize.x;
const float height = ImGui::GetIO().DisplaySize.y;
const float ortho_projection[4][4] =
{
{ 2.0f/width, 0.0f, 0.0f, 0.0f },
{ 0.0f, 2.0f/-height, 0.0f, 0.0f },
{ 0.0f, 0.0f, -1.0f, 0.0f },
{ -1.0f, 1.0f, 0.0f, 1.0f },
};
glUseProgram(g_ShaderHandle);
glUniform1i(g_AttribLocationTex, 0);
glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
// Grow our buffer according to what we need
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
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int needed_vtx_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
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if (g_VboSize < needed_vtx_size)
{
g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert); // Grow buffer
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glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)g_VboSize, NULL, GL_STREAM_DRAW);
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}
// Copy and convert all vertices into a single contiguous buffer
unsigned char* buffer_data = (unsigned char*)glMapBufferRange(GL_ARRAY_BUFFER, 0, g_VboSize, GL_MAP_WRITE_BIT);
if (!buffer_data)
return;
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for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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const ImDrawList* cmd_list = draw_data->CmdLists[n];
memcpy(buffer_data, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
buffer_data += cmd_list->VtxBuffer.size() * sizeof(ImDrawVert);
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}
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(g_VaoHandle);
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int vtx_offset = 0;
for (int n = 0; n < draw_data->CmdListsCount; n++)
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{
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ImDrawList* cmd_list = draw_data->CmdLists[n];
ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
// OpenGL ES doesn't support glDrawElementsBaseVertex, so
// we have to modify the index buffer to add the base vertex
// index for each command.
for (ImDrawIdx *idx = cmd_list->IdxBuffer.begin();
idx != cmd_list->IdxBuffer.end(); idx++)
{
(*idx) += vtx_offset;
}
const ImDrawCmd* pcmd_end = cmd_list->CmdBuffer.end();
for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != pcmd_end; pcmd++)
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{
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if (pcmd->UserCallback)
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{
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pcmd->UserCallback(cmd_list, pcmd);
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}
else
{
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glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
glScissor((int)(pcmd->ClipRect.x * g_displayScale),
(int)((height - pcmd->ClipRect.w) * g_displayScale),
(int)((pcmd->ClipRect.z - pcmd->ClipRect.x) * g_displayScale),
(int)((pcmd->ClipRect.w - pcmd->ClipRect.y) * g_displayScale));
glDrawElements( GL_TRIANGLES, (GLsizei)pcmd->ElemCount, GL_UNSIGNED_SHORT, idx_buffer );
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}
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idx_buffer += pcmd->ElemCount;
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}
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vtx_offset += cmd_list->VtxBuffer.size();
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}
// Restore modified state
glBindVertexArray(0);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glUseProgram(last_program);
glDisable(GL_SCISSOR_TEST);
glBindTexture(GL_TEXTURE_2D, last_texture);
}
void ImGui_ImplIOS_CreateFontsTexture()
{
ImGuiIO& io = ImGui::GetIO();
unsigned char* pixels;
int width, height;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
glGenTextures(1, &g_FontTexture);
glBindTexture(GL_TEXTURE_2D, g_FontTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
// Store our identifier
io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
// Cleanup (don't clear the input data if you want to append new fonts later)
io.Fonts->ClearInputData();
io.Fonts->ClearTexData();
}
bool ImGui_ImplIOS_CreateDeviceObjects()
{
const GLchar *vertex_shader =
"uniform mat4 ProjMtx;\n"
"attribute highp vec2 Position;\n"
"attribute highp vec2 UV;\n"
"attribute highp vec4 Color;\n"
"varying vec2 Frag_UV;\n"
"varying vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
" Frag_Color = Color;\n"
" gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* fragment_shader =
"uniform sampler2D Texture;\n"
"varying highp vec2 Frag_UV;\n"
"varying highp vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" gl_FragColor = Frag_Color * texture2D( Texture, Frag_UV.st);\n"
"}\n";
g_ShaderHandle = glCreateProgram();
g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
glCompileShader(g_VertHandle);
#if defined(DEBUG)
GLint logLength;
glGetShaderiv( g_VertHandle, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0) {
GLchar *log = (GLchar *)malloc(logLength);
glGetShaderInfoLog(g_VertHandle, logLength, &logLength, log);
NSLog(@"VERTEX Shader compile log:\n%s", log);
free(log);
}
#endif
glCompileShader(g_FragHandle);
#if defined(DEBUG)
glGetShaderiv( g_FragHandle, GL_INFO_LOG_LENGTH, &logLength);
if (logLength > 0) {
GLchar *log = (GLchar *)malloc(logLength);
glGetShaderInfoLog(g_FragHandle, logLength, &logLength, log);
NSLog(@"FRAGMENT Shader compile log:\n%s", log);
free(log);
}
#endif
glAttachShader(g_ShaderHandle, g_VertHandle);
glAttachShader(g_ShaderHandle, g_FragHandle);
glLinkProgram(g_ShaderHandle);
g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position");
g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV");
g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
glGenBuffers(1, &g_VboHandle);
glGenVertexArrays(1, &g_VaoHandle);
glBindVertexArray(g_VaoHandle);
glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
glEnableVertexAttribArray(g_AttribLocationPosition);
glEnableVertexAttribArray(g_AttribLocationUV);
glEnableVertexAttribArray(g_AttribLocationColor);
#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos));
glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
#undef OFFSETOF
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
ImGui_ImplIOS_CreateFontsTexture();
return true;
}
