Subversion Repositories filter_foundry

/*

        This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop

        Copyright (C) 2003-2009 Toby Thain, toby@telegraphics.com.au

        Copyright (C) 2018-2021 Daniel Marschall, ViaThinkSoft

        This program is free software; you can redistribute it and/or modify

        it under the terms of the GNU General Public License as published by

        the Free Software Foundation; either version 2 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 General Public License for more details.

        You should have received a copy of the GNU General Public License

        along with this program; if not, write to the Free Software

        Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include "ff.h"

#include "slider_win.h"

// PLUGIN.DLL Sliders: This method will register the "slider" class used in dialogs.

typedef int(__cdecl* f_RegisterSlider)(HINSTANCE hInstanceDll, DWORD* MessageID);

int RegisterSlider(HINSTANCE hInstanceDll, DWORD* MessageID) {

        f_RegisterSlider fRegisterSlider;

        if (!gdata->pluginDllModule) return 0;

        fRegisterSlider = (f_RegisterSlider)(void*)GetProcAddress(gdata->pluginDllModule, "RegisterSlider");

        if (fRegisterSlider != 0) {

                return fRegisterSlider(hInstanceDll, MessageID);

        }

        else {

                return 0;

        }

}

// PLUGIN.DLL Sliders: This method will unregister the "slider" class used in dialogs.

typedef int(__cdecl* f_UnregisterSlider)(HINSTANCE hInstanceDll);

int UnregisterSlider(HINSTANCE hInstanceDll) {

        f_UnregisterSlider fUnregisterSlider;

        if (!gdata->pluginDllModule) return 0;

        fUnregisterSlider = (f_UnregisterSlider)(void*)GetProcAddress(gdata->pluginDllModule, "UnregisterSlider");

        if (fUnregisterSlider != 0) {

                return fUnregisterSlider(hInstanceDll);

        }

        else {

                return 0;

        }

}

// PLUGIN.DLL Sliders: Set slider range (min/max)

typedef int(__cdecl* f_SetSliderRange)(HWND hWnd, int nMin, int nMax);

int SetSliderRange(HWND hWnd, int nMin, int nMax) {

        f_SetSliderRange fSetSliderRange;

        if (!gdata->pluginDllModule) return 0;

        fSetSliderRange = (f_SetSliderRange)(void*)GetProcAddress(gdata->pluginDllModule, "SetSliderRange");

        if (fSetSliderRange != 0) {

                return fSetSliderRange(hWnd, nMin, nMax);

        }

        else {

                return 0;

        }

}

// PLUGIN.DLL Sliders : Sets slider position

typedef int(__cdecl* f_SetSliderPos)(HWND hWnd, int nPos, BOOL bRepaint);

int SetSliderPos(HWND hWnd, int nPos, BOOL bRepaint) {

        f_SetSliderPos fSetSliderPos;

        if (!gdata->pluginDllModule) return 0;

        fSetSliderPos = (f_SetSliderPos)(void*)GetProcAddress(gdata->pluginDllModule, "SetSliderPos");

        if (fSetSliderPos != 0) {

                return fSetSliderPos(hWnd, nPos, bRepaint);

        }

        else {

                return 0;

        }

}

// PLUGIN.DLL Sliders : Get slider position

typedef int(__cdecl* f_GetSliderPos)(HWND hWnd, BOOL bPixelPosition);

int GetSliderPos(HWND hWnd, BOOL bPixelPosition) {

        f_GetSliderPos fGetSliderPos;

        if (!gdata->pluginDllModule) return 0;

        fGetSliderPos = (f_GetSliderPos)(void*)GetProcAddress(gdata->pluginDllModule, "GetSliderPos");

        if (fGetSliderPos != 0) {

                int res = fGetSliderPos(hWnd, bPixelPosition);

                return res;

        }

        else {

                return 0;

        }

}

LRESULT CALLBACK DummyWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {

        return DefWindowProc(hwnd, uMsg, wParam, lParam);

}

void Win32sFixSuperclassing(HWND hDlg, int destItem, int sourceItem) {

        // Win32s (Win3.11) compatibility fix: Since GetClassInfo(WC_BUTTON) and GetClassInfo(WC_STATIC) won't work,

        // we had replaced the WndProc by a dummy. Now, we find out the real Button and Static WndProcs and give them

        // to our classes, making them the intended superclasses. Messages which have been sent in between were lost,

        // though...

        WNDPROC wndProc;

#ifdef _WIN64

        wndProc = (WNDPROC)GetWindowLongPtr(GetDlgItem(hDlg, destItem), GWLP_WNDPROC);

        if (wndProc == DummyWndProc) {

                wndProc = (WNDPROC)GetWindowLongPtr(GetDlgItem(hDlg, sourceItem), GWLP_WNDPROC);

                SetWindowLongPtr(GetDlgItem(hDlg, destItem), GWLP_WNDPROC, (LONG_PTR)wndProc);

        }

#else

        wndProc = (WNDPROC)GetWindowLongPtr(GetDlgItem(hDlg, destItem), GWL_WNDPROC);

        if (wndProc == DummyWndProc) {

                wndProc = (WNDPROC)GetWindowLongPtr(GetDlgItem(hDlg, sourceItem), GWL_WNDPROC);

                SetWindowLongPtr(GetDlgItem(hDlg, destItem), GWL_WNDPROC, (LONG_PTR)wndProc);

        }

#endif

}

Boolean MakeSimpleSubclass(LPCTSTR targetClass, LPCTSTR sourceClass) {

        WNDCLASS clx;

        if (GetClassInfo(hDllInstance, sourceClass, &clx) != 0) {

                clx.lpszClassName = targetClass;

                if (RegisterClass(&clx) == 0) {

                        TCHAR s[0x300];

                        xstrcpy(s, (TCHAR*)TEXT("RegisterClass failed: "));

                        FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, s + xstrlen(s), 0x300 - (DWORD)xstrlen(s), NULL);

                        dbg(&s[0]);

                        return false;

                }

                else {

                        return true;

                }

        }

        else {

                if ((xstrcmp(sourceClass, WC_BUTTON) == 0) || (xstrcmp(sourceClass, WC_STATIC) == 0)) {

                        // GetClassInfo(WC_STATIC) and GetClassInfo(WC_BUTTON) fail on Win32s (Windows 3.11)

                        // So we create a fake-class now. It will be replaced with the real Button/Static WndProc later!

                        clx.style = 0;

                        clx.lpfnWndProc = DummyWndProc;

                        clx.cbClsExtra = 0;

                        clx.cbWndExtra = 0;

                        clx.hInstance = hDllInstance;

                        clx.hIcon = 0;

                        clx.hCursor = 0;

                        clx.hbrBackground = 0;

                        clx.lpszMenuName = 0;

                        clx.lpszClassName = targetClass;

                        if (RegisterClass(&clx) == 0) {

                                TCHAR s[0x300];

                                xstrcpy(s, (TCHAR*)TEXT("RegisterClass failed: "));

                                FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, s + xstrlen(s), 0x300 - (DWORD)xstrlen(s), NULL);

                                dbg(&s[0]);

                                return false;

                        }

                        else {

                                return true;

                        }

                }

                else {

                        simplealert(TEXT("GetClassInfo failed"));

                }

                return false;

        }

}

void Slider_Uninit_PluginDll() {

#ifndef use_plugin_dll_sliders

        return;

#else

        WNDCLASS clx;

        if (GetClassInfo(hDllInstance, TEXT("slider"), &clx) != 0) {

                UnregisterSlider(hDllInstance);

        }

        if (gdata->pluginDllModule) {

                FreeLibrary(gdata->pluginDllModule);

                gdata->pluginDllModule = 0;

        }

#endif

}

Boolean Slider_Init_PluginDll(LPCTSTR targetClass) {

#ifndef use_plugin_dll_sliders

        return false;

#else

        DWORD sliderMsgId;

        // Try loading PLUGIN.DLL (only Photoshop) in order to register the class "slider"

        gdata->pluginDllModule = LoadLibrary(TEXT("PLUGIN.DLL"));

        if (!gdata->pluginDllModule) return false;

        sliderMsgId = 0; // important

        RegisterSlider(hDllInstance, &sliderMsgId);

        if (sliderMsgId != 0) {

                // RegisterSlider will "remember" if it gave you a message ID before,

                // and it will NOT give it to you again! (instead, the output variable stays untouched).

                // The problem: PLUGIN.DLL stays loaded the whole time, so it keeps remembering, while Filter Foundry

                // loses its internal state every time the window is closed.

                // So, we keep the message ID in the global (persistant) data, so we remember it.

                gdata->pluginDllSliderMessageId = sliderMsgId;

        }

        // Make "FoundrySlider" a subclass of "slider" then

        return MakeSimpleSubclass(targetClass, TEXT("slider"));

#endif

}

typedef void(__stdcall* f_InitCommonControls)();

typedef BOOL(__stdcall* f_InitCommonControlsEx)(const INITCOMMONCONTROLSEX* picce);

Boolean Slider_Init_MsTrackbar(LPCTSTR targetClass) {

        f_InitCommonControls fInitCommonControls;

        f_InitCommonControlsEx fInitCommonControlsEx;

        HMODULE libComctl32;

        // Make sure that Comctl32 is loaded

        libComctl32 = LoadLibrary(TEXT("Comctl32.dll"));

        if (libComctl32) {

                fInitCommonControlsEx = (f_InitCommonControlsEx)(void*)GetProcAddress(libComctl32, "InitCommonControlsEx");

                if (fInitCommonControlsEx != 0) {

                        INITCOMMONCONTROLSEX icce;

                        icce.dwSize = sizeof(INITCOMMONCONTROLSEX);

                        icce.dwICC = ICC_BAR_CLASSES;

                        fInitCommonControlsEx(&icce);

                }

                else {

                        fInitCommonControls = (f_InitCommonControls)(void*)GetProcAddress(libComctl32, "InitCommonControls");

                        if (fInitCommonControls != 0) {

                                fInitCommonControls();

                        }

                }

                // There seems to be a bug in Windows NT 3.11 (if PLUGIN.DLL does not exist):

                // If we call FreeLibrary, and then open Filter Foundry again,

                // then you get an error message "BRUSHES" cannot initialize Comctl32.dll ...

                // I am not sure if it is OK to do a FreeLibrary after you have called InitCommonControls.

                // Isn't that a contradiction?

                //FreeLibrary(libComctl32);

        }

        // Make "FoundrySlider" a subclass of "msctls_trackbar32" then

        return MakeSimpleSubclass(targetClass, TEXT("msctls_trackbar32"));

}

Boolean Slider_Init_None(LPCTSTR targetClass) {

        // Make "FoundrySlider" a subclass of "STATIC" (making it invisible)

        return MakeSimpleSubclass(targetClass, WC_STATIC);

}