blob: 254402e911e8a30c43959f839f33fb4e624e676f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
/* Copyright (c) 2010 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef PPAPI_C_DEV_PPB_SCROLLBAR_DEV_H_
#define PPAPI_C_DEV_PPB_SCROLLBAR_DEV_H_
#include "ppapi/c/pp_bool.h"
#include "ppapi/c/pp_instance.h"
#include "ppapi/c/pp_macros.h"
#include "ppapi/c/pp_resource.h"
#include "ppapi/c/pp_stdint.h"
struct PP_Rect;
typedef enum {
PP_SCROLLBY_PIXEL = 0,
PP_SCROLLBY_LINE = 1,
PP_SCROLLBY_PAGE = 2,
PP_SCROLLBY_DOCUMENT = 3
} PP_ScrollBy_Dev;
PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_ScrollBy_Dev, 4);
#define PPB_SCROLLBAR_DEV_INTERFACE "PPB_Scrollbar(Dev);0.2"
// The interface for a scrollbar. A scrollbar is a widget, so the functions
// in PPB_Widget can also be used with scrollbar objects.
struct PPB_Scrollbar_Dev {
// Create a new scrollbar. Returns 0 if the instance is invalid.
PP_Resource (*Create)(PP_Instance instance,
PP_Bool vertical);
// Returns PP_TRUE if the given resource is a Scrollbar. Returns PP_FALSE if
// the resource is invalid or some type other than a scrollbar.
PP_Bool (*IsScrollbar)(PP_Resource resource);
// Gets the thickness of a scrollbar.
uint32_t (*GetThickness)();
// Get/set the value of the scrollbar.
uint32_t (*GetValue)(PP_Resource scrollbar);
void (*SetValue)(PP_Resource scrollbar,
uint32_t value);
// Set the document size (i.e. total length of the region that's being
// scrolled).
void (*SetDocumentSize)(PP_Resource scrollbar,
uint32_t size);
// Updates the tickmarks. Only valid for vertical scrollbars. "tick_marks"
// contains "count" PP_Rect objects.
void (*SetTickMarks)(PP_Resource scrollbar,
const struct PP_Rect* tick_marks,
uint32_t count);
// Scroll by "multiplier" pixels/lines/pages units. Positive values are
// forward and negative are backward. If "unit" is document then any positive
// value goes to the end while any negative value goes to the beginning.
void (*ScrollBy)(PP_Resource scrollbar,
PP_ScrollBy_Dev unit,
int32_t multiplier);
};
#endif /* PPAPI_C_DEV_PPB_SCROLLBAR_DEV_H_ */
|
