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Native window decorations: avoid using C-runtime, which reduces the DLL size from 100kb to 8kb

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This commit is contained in:
Karl Tauber
2021-03-06 12:01:49 +01:00
parent 144d65c776
commit 8734b062dc
7 changed files with 308 additions and 17 deletions
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35
flatlaf-natives/flatlaf-natives-windows/src/main/cpp/FlatWndProc.cpp
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@@ -14,12 +14,14 @@
* limitations under the License.
*/
// avoid inlining of printf()
#define _NO_CRT_STDIO_INLINE
#include <windows.h>
#include <windowsx.h>
#include <shellapi.h>
#include <jawt.h>
#include <jawt_md.h>
#include <map>
#include "FlatWndProc.h"
#include "com_formdev_flatlaf_ui_FlatWindowsNativeWindowBorder_WndProc.h"
@@ -50,7 +52,7 @@ jmethodID FlatWndProc::onNcHitTestMID;
jmethodID FlatWndProc::isFullscreenMID;
jmethodID FlatWndProc::fireStateChangedLaterOnceMID;
std::map<HWND, FlatWndProc*> FlatWndProc::hwndMap = std::map<HWND, FlatWndProc*>();
HWNDMap* FlatWndProc::hwndMap;
//---- class FlatWndProc methods ----------------------------------------------
@@ -63,21 +65,25 @@ FlatWndProc::FlatWndProc() {
}
HWND FlatWndProc::install( JNIEnv *env, jobject obj, jobject window ) {
initIDs( env, obj );
initIDs( env, obj );
if( initialized < 0 )
return 0;
if( initialized < 0 )
return 0;
// create HWND map
if( hwndMap == NULL )
hwndMap = new HWNDMap();
// get window handle
HWND hwnd = getWindowHandle( env, window );
if( hwnd == NULL || hwndMap.count( hwnd ) > 0 )
if( hwnd == NULL || hwndMap->get( hwnd ) != NULL )
return 0;
FlatWndProc* fwp = new FlatWndProc();
env->GetJavaVM( &fwp->jvm );
fwp->obj = env->NewGlobalRef( obj );
fwp->hwnd = hwnd;
hwndMap[hwnd] = fwp;
hwndMap->put( hwnd, fwp );
// replace window procedure
fwp->defaultWndProc = reinterpret_cast<WNDPROC>(
@@ -90,11 +96,14 @@ HWND FlatWndProc::install( JNIEnv *env, jobject obj, jobject window ) {
}
void FlatWndProc::uninstall( JNIEnv *env, jobject obj, HWND hwnd ) {
if( hwnd == NULL || hwndMap.count( hwnd ) == 0 )
return;
if( hwnd == NULL )
return;
FlatWndProc* fwp = hwndMap[hwnd];
hwndMap.erase( hwnd );
FlatWndProc* fwp = (FlatWndProc*) hwndMap->get( hwnd );
if( fwp == NULL )
return;
hwndMap->remove( hwnd );
// restore original window procedure
::SetWindowLongPtr( hwnd, GWLP_WNDPROC, (LONG_PTR) fwp->defaultWndProc );
@@ -132,7 +141,7 @@ void FlatWndProc::updateFrame() {
}
LRESULT CALLBACK FlatWndProc::StaticWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) {
FlatWndProc* fwp = hwndMap[hwnd];
FlatWndProc* fwp = (FlatWndProc*) hwndMap->get( hwnd );
return fwp->WindowProc( hwnd, uMsg, wParam, lParam );
}
@@ -175,7 +184,7 @@ LRESULT FlatWndProc::WmDestroy( HWND hwnd, int uMsg, WPARAM wParam, LPARAM lPara
// cleanup
getEnv()->DeleteGlobalRef( obj );
hwndMap.erase( hwnd );
hwndMap->remove( hwnd );
delete this;
// call original AWT window procedure because it may fire window closed event in AwtWindow::WmDestroy()