diff options
Diffstat (limited to 'nGenEx/EventDispatch.cpp')
| -rw-r--r-- | nGenEx/EventDispatch.cpp | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/nGenEx/EventDispatch.cpp b/nGenEx/EventDispatch.cpp new file mode 100644 index 0000000..e17713b --- /dev/null +++ b/nGenEx/EventDispatch.cpp @@ -0,0 +1,275 @@ +/* Project nGenEx
+ Destroyer Studios LLC
+ Copyright © 1997-2004. All Rights Reserved.
+
+ SUBSYSTEM: nGenEx.lib
+ FILE: EventDispatch.cpp
+ AUTHOR: John DiCamillo
+
+*/
+
+#include "MemDebug.h"
+#include "EventDispatch.h"
+#include "Mouse.h"
+#include "Keyboard.h"
+
+// +--------------------------------------------------------------------+
+
+int GetKeyPlus(int& key, int& shift);
+
+// +--------------------------------------------------------------------+
+
+EventDispatch* EventDispatch::dispatcher = 0;
+
+// +--------------------------------------------------------------------+
+
+EventDispatch::EventDispatch()
+ : capture(0), current(0), focus(0), click_tgt(0)
+ , mouse_x(0), mouse_y(0), mouse_l(0), mouse_r(0)
+{ }
+
+EventDispatch::~EventDispatch()
+{ }
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::Create()
+{
+ dispatcher = new(__FILE__,__LINE__) EventDispatch;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::Close()
+{
+ delete dispatcher;
+ dispatcher = 0;
+}
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::Dispatch()
+{
+ int ml = Mouse::LButton();
+ int mr = Mouse::RButton();
+ int mx = Mouse::X();
+ int my = Mouse::Y();
+ int mw = Mouse::Wheel();
+
+ EventTarget* mouse_tgt = capture;
+ EventTarget* key_tgt = focus;
+ EventTarget* do_click = 0;
+
+ if (!mouse_tgt) {
+ ListIter<EventTarget> iter = clients;
+ while (++iter) {
+ EventTarget* test = iter.value();
+ if (test->IsFormActive()) {
+ if (test->TargetRect().Contains(mx,my))
+ mouse_tgt = test;
+
+ if (test->HasFocus())
+ key_tgt = test;
+ }
+ }
+ }
+
+ // Mouse Events:
+
+ if (mouse_tgt != current) {
+ if (current && current->IsEnabled() && current->IsVisible())
+ current->OnMouseExit(mx,my);
+
+ current = mouse_tgt;
+
+ if (current && current->IsEnabled() && current->IsVisible())
+ current->OnMouseEnter(mx,my);
+ }
+
+ if (mouse_tgt && mouse_tgt->IsEnabled()) {
+ if (mx != mouse_x || my != mouse_y)
+ mouse_tgt->OnMouseMove(mx,my);
+
+ if (mw != 0)
+ mouse_tgt->OnMouseWheel(mw);
+
+ if (ml != mouse_l) {
+ if (ml) {
+ mouse_tgt->OnLButtonDown(mx,my);
+ click_tgt = mouse_tgt;
+ }
+ else {
+ mouse_tgt->OnLButtonUp(mx,my);
+
+ if (click_tgt == mouse_tgt) {
+ if (click_tgt->TargetRect().Contains(mx,my))
+ do_click = click_tgt;
+ click_tgt = 0;
+ }
+ }
+ }
+
+ if (mr != mouse_r) {
+ if (mr)
+ mouse_tgt->OnRButtonDown(mx,my);
+ else
+ mouse_tgt->OnRButtonUp(mx,my);
+ }
+ }
+
+ mouse_l = ml;
+ mouse_r = mr;
+ mouse_x = mx;
+ mouse_y = my;
+
+ // Keyboard Events:
+
+ if (click_tgt && click_tgt != key_tgt) {
+ if (key_tgt) key_tgt->KillFocus();
+ key_tgt = click_tgt;
+
+ if (key_tgt != focus) {
+ if (focus) focus->KillFocus();
+
+ if (key_tgt && key_tgt->IsEnabled() && key_tgt->IsVisible())
+ focus = key_tgt;
+ else
+ key_tgt = 0;
+
+ if (focus) focus->SetFocus();
+ }
+ }
+
+ if (key_tgt && key_tgt->IsEnabled()) {
+ int key = 0;
+ int shift = 0;
+
+ while (GetKeyPlus(key, shift)) {
+ if (key == VK_ESCAPE) {
+ key_tgt->KillFocus();
+ focus = 0;
+ break;
+ }
+
+ else if (key == VK_TAB && focus) {
+ int key_index = clients.index(focus) + 1;
+
+ if (shift & 1) key_index -= 2;
+
+ if (key_index >= clients.size())
+ key_index = 0;
+ else if (key_index < 0)
+ key_index = clients.size()-1;
+
+ if (focus) focus->KillFocus();
+ focus = clients[key_index];
+ if (focus) focus->SetFocus();
+
+ break;
+ }
+
+ key_tgt->OnKeyDown(key, shift);
+ }
+ }
+
+ if (do_click)
+ do_click->OnClick();
+}
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::MouseEnter(EventTarget* mouse_tgt)
+{
+ if (mouse_tgt != current) {
+ if (current) current->OnMouseExit(0,0);
+ current = mouse_tgt;
+ if (current) current->OnMouseEnter(0,0);
+ }
+}
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::Register(EventTarget* tgt)
+{
+ if (!clients.contains(tgt))
+ clients.append(tgt);
+}
+
+// +--------------------------------------------------------------------+
+
+void
+EventDispatch::Unregister(EventTarget* tgt)
+{
+ clients.remove(tgt);
+
+ if (capture == tgt) capture = 0;
+ if (current == tgt) current = 0;
+ if (focus == tgt) focus = 0;
+ if (click_tgt == tgt) click_tgt = 0;
+}
+
+// +--------------------------------------------------------------------+
+
+EventTarget*
+EventDispatch::GetCapture()
+{
+ return capture;
+}
+
+int
+EventDispatch::CaptureMouse(EventTarget* tgt)
+{
+ if (tgt) {
+ capture = tgt;
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+EventDispatch::ReleaseMouse(EventTarget* tgt)
+{
+ if (capture == tgt) {
+ capture = 0;
+ return 1;
+ }
+
+ return 0;
+}
+
+// +--------------------------------------------------------------------+
+
+EventTarget*
+EventDispatch::GetFocus()
+{
+ return focus;
+}
+
+void
+EventDispatch::SetFocus(EventTarget* tgt)
+{
+ if (focus != tgt) {
+ if (focus)
+ focus->KillFocus();
+
+ focus = tgt;
+
+ if (focus && focus->IsEnabled() && focus->IsVisible())
+ focus->SetFocus();
+ }
+}
+
+void
+EventDispatch::KillFocus(EventTarget* tgt)
+{
+ if (focus && focus == tgt) {
+ focus = 0;
+ tgt->KillFocus();
+ }
+}
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