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milligram


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Revision4fb7499263137cdefba517717336221767b7307e (tree)
Time2011-05-03 07:12:30
Authorberupon <berupon@gmai...>
Commiterberupon

Log Message

rewrite in C language.

Change Summary

Incremental Difference

--- /dev/null
+++ b/mg2/mg.c
@@ -0,0 +1,101 @@
1+#include "mg.h"
2+
3+void mg_offset(mgRect* p, mgPoint pt) {
4+ p->pos.x += pt.x;
5+ p->pos.y += pt.y;
6+}
7+
8+bool_t mg_in(const mgRect* p, mgPoint pt) {
9+ return
10+ 1
11+ && mg_left(p) <= pt.x
12+ && pt.x < mg_right(p)
13+ && mg_top(p) <= pt.y
14+ && pt.y < mg_bottom(p)
15+ ;
16+}
17+
18+bool_t mg_contains(const mgRect* p, const mgRect* pCheck) {
19+ return
20+ 1
21+ && mg_left(p) <= mg_left(pCheck)
22+ && mg_right(p) >= mg_right(pCheck)
23+ && mg_top(p) <= mg_top(pCheck)
24+ && mg_bottom(p) >= mg_bottom(pCheck)
25+ ;
26+}
27+
28+void mg_intersect(const mgRect* p1, const mgRect* p2, mgRect* pResult) {
29+ int16_t left = max(mg_left(p1), mg_left(p2));
30+ int16_t right = min(mg_right(p1), mg_right(p2));
31+
32+ int16_t top = max(mg_top(p1), mg_top(p2));
33+ int16_t bottom = min(mg_bottom(p1), mg_bottom(p2));
34+
35+ pResult->x = left;
36+ pResult->w = max(0, right - left);
37+
38+ pResult->y = top;
39+ pResult->h = max(0, bottom - top);
40+}
41+
42+void mg_unionPoint(const mgRect* pRect, mgPoint pt, mgRect* pResult) {
43+ mgPoint rp = pRect->pt;
44+ pResult->pt.x = min(rp.x, pt.x);
45+ pResult->pt.y = min(rp.y, pt.y);
46+ pResult->w = max(pRect->w, pt.x - rp.x + 1);
47+ pResult->h = max(pRect->h, pt.y - rp.y + 1);
48+}
49+
50+void mg_unionRect(const mgRect* p1, const mgRect* p2, mgRect* pResult) {
51+ pResult->x = min(p1->pt.x, p2->pt.x);
52+ pResult->y = min(p1->pt.y, p2->pt.y);
53+ pResult->w = max(mg_right(p1), mg_right(p2)) - mg_left(pResult);
54+ pResult->h = max(mg_bottom(p1), mg_bottom(p2)) - mg_top(pResult);
55+}
56+
57+static mgElement* s_pElements[256];
58+static mgElement* s_pBehaviors[256];
59+
60+void mg_registerElement(mgElement* p) {
61+ mgEnum i;
62+ for (i=0; i<256; ++i) {
63+ if (!s_pElements[i]) {
64+ s_pElements[i] = p;
65+ p->id = i;
66+ break;
67+ }
68+ }
69+}
70+
71+void mg_unregisterElement(mgElement* p) {
72+ s_pElements[i] = 0;
73+ p->id = 0;
74+}
75+
76+void mg_registerBehavior(mgBehavior* p) {
77+ mgEnum i;
78+ for (i=0; i<256; ++i) {
79+ if (!s_pBehaviors[i]) {
80+ s_pBehaviors[i] = p;
81+ p->id = i;
82+ break;
83+ }
84+ }
85+}
86+
87+void mg_unresiterBehavior(mgBehavior* p) {
88+ s_pBehaviors[i] = 0;
89+ p->id = 0;
90+}
91+
92+void mg_notifyEvent(id_t parent, mgEventInfo* pEvent) {
93+
94+}
95+
96+void mg_initialize() {
97+
98+
99+
100+}
101+
--- /dev/null
+++ b/mg2/mg.h
@@ -0,0 +1,94 @@
1+#ifndef MG_H_INCLUDED__
2+#define MG_H_INCLUDED__
3+
4+#ifdef __cplusplus
5+extern "C" {
6+#endif /* __cplusplus */
7+
8+// type definitions
9+
10+typedef struct mgPoint_t {
11+ int16_t x;
12+ int16_t y;
13+} mgPoint;
14+
15+typedef struct mgRect_t {
16+ mgPoint pos;
17+ uint16_t w;
18+ uint16_t h;
19+} mgRect;
20+
21+typedef uint8_t mgEnum;
22+
23+typedef struct mgElement_t {
24+ mgEnum behavior;
25+ mgEnum id;
26+ mgEnum parent;
27+
28+ mgRect rect;
29+ bool_t bEnable;
30+ bool_t bVisible;
31+ bool_t bNeedsToDraw;
32+
33+} mgElement;
34+
35+typedef struct mgBehavior_t {
36+ mgEventListerFunc pDraw;
37+ mgEventListerFunc pHitTest;
38+ mgEventListerFunc pOnMouseDown;
39+ mgEventListerFunc pOnMouseUp;
40+ mgEventListerFunc pOnMouseMove;
41+} mgBehavior;
42+
43+typedef enum mgEventType_t {
44+ mgEventType_MouseDown,
45+ mgEventType_MouseUp,
46+ mgEventType_MouseMove,
47+
48+} mgEventType;
49+
50+typedef struct mgEventInfo_t {
51+ mgElement* pTarget;
52+ mgEventType type;
53+ mgPoint pos;
54+} mgEventInfo;
55+
56+typedef enum mgElementType_t {
57+ mgElementType_Canvas,
58+ mgElementType_Label,
59+ mgElementType_Button,
60+
61+} mgElementType;
62+
63+typedef bool (*mgEventListenerFunc) (mgEventInfo* pInfo);
64+
65+// function
66+
67+int16_t mg_left(const mgRect* p) const { return p->pos.x; }
68+int16_t mg_right(const mgRect* p) const { return mg_left(p) + p->w; }
69+int16_t mg_top(const mgRect* p) const { return p->pos.y; }
70+int16_t mg_bottom(const mgRect* p) const { return mg_top(p) + p->h; }
71+
72+void mg_offset(mgRect* p, mgPoint pt);
73+bool_t mg_in(const mgRect* p, mgPoint pt);
74+
75+bool_t mg_contains(const mgRect* p, const mgRect* pCheck);
76+void mg_intersect(const mgRect* p1, const mgRect* p2, mgRect* pResult);
77+
78+void mg_unionPoint(const mgRect* pRect, mgPoint pt, mgRect* pResult);
79+void mg_unionRect(const mgRect* p1, const mgRect* p2, mgRect* pResult);
80+
81+void mg_setEventListener(mgEnum id, mgEventType type, mgEventListenerFunc func);
82+
83+void mg_initialize();
84+
85+void mg_registerElement(mgElement* p);
86+void mg_unregisterElement(mgElement* p);
87+
88+void mg_notifyEvent(id_t parent, mgEventInfo* pEvent);
89+
90+#ifdef __cplusplus
91+}; /* extern "C" */
92+#endif /* __cplusplus */
93+
94+#endif // #ifndef MG_H_INCLUDED__