1 /*
2 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
3 */
4 #include "config.h"
5
6 #include "Chrome.h"
7 #include "ChromeClientJava.h"
8 #include "Frame.h"
9 #include "FrameView.h"
10 #include "GraphicsContext.h"
11 #include "HostWindow.h"
12 #include "Page.h"
13 #include "PlatformContextJava.h"
14 #include "PlatformMouseEvent.h"
15 #include "Scrollbar.h"
16 #include "ScrollbarThemeJava.h"
17 #include "ScrollView.h"
18 #include "NotImplemented.h"
19
20 #include "JavaEnv.h"
21 #include "com_sun_webkit_graphics_ScrollBarTheme.h"
22 #include "com_sun_webkit_graphics_GraphicsDecoder.h"
23
24 namespace WebCore {
25
26
27 ScrollbarTheme& ScrollbarTheme::nativeTheme()
28 {
29 static ScrollbarTheme *s_sharedInstance = new ScrollbarThemeJava();
30 return *s_sharedInstance;
31 }
32
33 jclass getJScrollBarThemeClass()
34 {
35 static JGClass jScrollbarThemeClass(
36 WebCore_GetJavaEnv()->FindClass("com/sun/webkit/graphics/ScrollBarTheme"));
37 ASSERT(jScrollbarThemeClass);
38
39 return jScrollbarThemeClass;
40 }
41
42 JLObject getJScrollBarTheme(Scrollbar& sb) //XXX: ScrollbarThemeClient replaced by Scrollbar, double recheck
43 {
44 FrameView* fv = sb.root();
45 if (!fv) {
46 // the scrollbar has been detached
47 return 0;
48 }
49 Page* page = fv->frame().page();
50 JLObject jWebPage = ((ChromeClientJava*)&page->chrome().client())->platformPage();
51
52 JNIEnv* env = WebCore_GetJavaEnv();
53
54 static jmethodID mid = env->GetMethodID(
55 PG_GetWebPageClass(env),
56 "getScrollBarTheme",
57 "()Lcom/sun/webkit/graphics/ScrollBarTheme;");
58 ASSERT(mid);
59
60 JLObject jScrollbarTheme = env->CallObjectMethod(jWebPage, mid);
61 ASSERT(jScrollbarTheme);
62 CheckAndClearException(env);
63
64 return jScrollbarTheme;
65 }
66
67 bool ScrollbarThemeJava::paint(Scrollbar& scrollbar, GraphicsContext& gc, const IntRect& damageRect)
68 {
69 // platformContext() returns 0 when printing
70 if (gc.paintingDisabled() || !gc.platformContext()) {
71 return true;
72 }
73
74 JLObject jtheme = getJScrollBarTheme(scrollbar);
75 if (!jtheme) {
76 return false;
77 }
78 JNIEnv* env = WebCore_GetJavaEnv();
79
80 static jmethodID mid = env->GetMethodID(
81 getJScrollBarThemeClass(),
82 "createWidget",
83 "(JIIIIII)Lcom/sun/webkit/graphics/Ref;");
84 ASSERT(mid);
85
86 RefPtr<RQRef> widgetRef = RQRef::create( env->CallObjectMethod(
87 jtheme,
88 mid,
89 ptr_to_jlong(&scrollbar),
90 (jint)scrollbar.width(),
91 (jint)scrollbar.height(),
92 (jint)scrollbar.orientation(),
93 (jint)scrollbar.value(),
94 (jint)scrollbar.visibleSize(),
95 (jint)scrollbar.totalSize()));
96 ASSERT(widgetRef.get());
97 CheckAndClearException(env);
98
99 // widgetRef will go into rq's inner refs vector.
100 gc.platformContext()->rq().freeSpace(28)
101 << (jint)com_sun_webkit_graphics_GraphicsDecoder_DRAWSCROLLBAR
102 << RQRef::create(jtheme)
103 << widgetRef
104 << (jint)scrollbar.x()
105 << (jint)scrollbar.y()
106 << (jint)scrollbar.pressedPart()
107 << (jint)scrollbar.hoveredPart();
108
109 return false;
110 }
111
112 ScrollbarPart ScrollbarThemeJava::hitTest(Scrollbar& scrollbar, const IntPoint& pos)
113 {
114 if (!scrollbar.enabled()) {
115 return (ScrollbarPart)0;
116 }
117
118 JLObject jtheme = getJScrollBarTheme(scrollbar);
119 if (!jtheme) {
120 return (ScrollbarPart)0;
121 }
122 JNIEnv* env = WebCore_GetJavaEnv();
123
124 static jmethodID mid = env->GetMethodID(
125 getJScrollBarThemeClass(),
126 "hitTest",
127 "(JII)I");
128 ASSERT(mid);
129
130 IntPoint p = scrollbar.convertFromContainingWindow(pos);
131 int part = env->CallIntMethod(
132 jtheme,
133 mid,
134 ptr_to_jlong(&scrollbar),
135 (jint)p.x(),
136 (jint)p.y());
137 CheckAndClearException(env);
138
139 return (ScrollbarPart)part;
140 }
141
142 void ScrollbarThemeJava::invalidatePart(Scrollbar& scrollbar, ScrollbarPart)
143 {
144 // FIXME: Do more precise invalidation.
145 scrollbar.invalidate();
146 }
147
148 int ScrollbarThemeJava::thumbPosition(Scrollbar& scrollbar)
149 {
150 if (!scrollbar.enabled()) {
151 return 0;
152 }
153
154 JLObject jtheme = getJScrollBarTheme(scrollbar);
155 if (!jtheme) {
156 return 0;
157 }
158 JNIEnv* env = WebCore_GetJavaEnv();
159
160 static jmethodID mid = env->GetMethodID(
161 getJScrollBarThemeClass(),
162 "getThumbPosition",
163 "(J)I");
164 ASSERT(mid);
165
166 int pos = env->CallIntMethod(
167 jtheme,
168 mid,
169 ptr_to_jlong(&scrollbar));
170 CheckAndClearException(env);
171
172 return pos;
173 }
174
175 int ScrollbarThemeJava::thumbLength(Scrollbar& scrollbar)
176 {
177 if (!scrollbar.enabled()) {
178 return 0;
179 }
180 JLObject jtheme = getJScrollBarTheme(scrollbar);
181 if (!jtheme) {
182 return 0;
183 }
184 JNIEnv* env = WebCore_GetJavaEnv();
185
186 static jmethodID mid = env->GetMethodID(
187 getJScrollBarThemeClass(),
188 "getThumbLength",
189 "(J)I");
190 ASSERT(mid);
191
192 int len = env->CallIntMethod(
193 jtheme,
194 mid,
195 ptr_to_jlong(&scrollbar));
196 CheckAndClearException(env);
197
198 return len;
199 }
200
201 int ScrollbarThemeJava::trackPosition(Scrollbar& scrollbar)
202 {
203 if (!scrollbar.enabled()) {
204 return 0;
205 }
206 JLObject jtheme = getJScrollBarTheme(scrollbar);
207 if (!jtheme) {
208 return 0;
209 }
210 JNIEnv* env = WebCore_GetJavaEnv();
211
212 static jmethodID mid = env->GetMethodID(
213 getJScrollBarThemeClass(),
214 "getTrackPosition",
215 "(J)I");
216 ASSERT(mid);
217
218 int pos = env->CallIntMethod(
219 jtheme,
220 mid,
221 ptr_to_jlong(&scrollbar));
222 CheckAndClearException(env);
223
224 return pos;
225 }
226
227 int ScrollbarThemeJava::trackLength(Scrollbar& scrollbar)
228 {
229 if (!scrollbar.enabled()) {
230 return 0;
231 }
232 JLObject jtheme = getJScrollBarTheme(scrollbar);
233 if (!jtheme) {
234 return 0;
235 }
236 JNIEnv* env = WebCore_GetJavaEnv();
237
238 static jmethodID mid = env->GetMethodID(
239 getJScrollBarThemeClass(),
240 "getTrackLength",
241 "(J)I");
242 ASSERT(mid);
243
244 int len = env->CallIntMethod(
245 jtheme,
246 mid,
247 ptr_to_jlong(&scrollbar));
248 CheckAndClearException(env);
249
250 return len;
251 }
252
253 int ScrollbarThemeJava::scrollbarThickness(ScrollbarControlSize controlSize)
254 {
255 JNIEnv* env = WebCore_GetJavaEnv();
256
257 static jmethodID mid = env->GetStaticMethodID(
258 getJScrollBarThemeClass(),
259 "getThickness",
260 "()I");
261 ASSERT(mid);
262
263 int thickness = env->CallStaticIntMethod(
264 getJScrollBarThemeClass(),
265 mid);
266 CheckAndClearException(env);
267
268 return thickness;
269 }
270
271 } //namespace WebCore
272