i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

* Changed ContinuousMessageFilter to register for parameter value changes,

Browse Source 
and change its slider value when such a message arrives.
* Currently, this will only work if such a view already received a message;
  added a TODO about how it should be done, but since those would require
  some more changes, I don't want to do that as long as Sean Healy is working
  on that file.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30083 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2009-04-09 21:21:42 +00:00
parent ac0a972985
commit 126d77c5d5
1 changed files with 100 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/kits/media/DefaultMediaTheme.cpp
+100 -51
View File
@@ -1,28 +1,29 @@
/*
* Copyright 2003-2007, Axel Dörfler, [email protected]. All rights reserved.
* Copyright 2003-2009, Axel Dörfler, [email protected].
* Distributed under the terms of the MIT License.
*/
#include "DefaultMediaTheme.h"
#include "debug.h"
#include <ParameterWeb.h>
#include <Slider.h>
#include <ScrollBar.h>
#include <StringView.h>
#include <Button.h>
#include <TextControl.h>
#include <OptionPopUp.h>
#include <ChannelSlider.h>
#include <Box.h>
#include <Button.h>
#include <ChannelSlider.h>
#include <CheckBox.h>
#include <TabView.h>
#include <MediaRoster.h>
#include <MenuField.h>
#include <MessageFilter.h>
#include <OptionPopUp.h>
#include <ParameterWeb.h>
#include <ScrollBar.h>
#include <Slider.h>
#include <StringView.h>
#include <TabView.h>
#include <TextControl.h>
#include <Window.h>
#include "debug.h"
using namespace BPrivate;
@@ -121,7 +122,11 @@ class ContinuousMessageFilter : public MessageFilter {
virtual filter_result Filter(BMessage *message, BHandler **target);
private:
void _UpdateControl();
BControl *fControl;
BContinuousParameter &fParameter;
bool fRegistered;
};
class DiscreteMessageFilter : public MessageFilter {
@@ -588,33 +593,22 @@ MessageFilter::FilterFor(BView *view, BParameter &parameter)
ContinuousMessageFilter::ContinuousMessageFilter(BControl *control,
BContinuousParameter &parameter)
: MessageFilter(),
fParameter(parameter)
fControl(control),
fParameter(parameter),
fRegistered(false)
{
// initialize view for us
control->SetMessage(new BMessage(kMsgParameterChanged));
// set initial value
// ToDo: response support!
float value[fParameter.CountChannels()];
size_t size = sizeof(value);
if (parameter.GetValue((void *)&value, &size, NULL) < B_OK) {
ERROR("ContinuousMessageFilter: Could not get value for continuous "
"parameter %p (name '%s', node %d)\n", &parameter,
parameter.Name(), (int)(parameter.Web()->Node().node));
return;
}
if (BSlider *slider = dynamic_cast<BSlider *>(control)) {
slider->SetValue((int32) (1000 * value[0]));
if (BSlider *slider = dynamic_cast<BSlider *>(fControl))
slider->SetModificationMessage(new BMessage(kMsgParameterChanged));
} else if (BChannelSlider *slider = dynamic_cast<BChannelSlider *>(control)) {
for (int32 i = 0; i < fParameter.CountChannels(); i++)
slider->SetValueFor(i, (int32) (1000 * value[i]));
else if (BChannelSlider *slider = dynamic_cast<BChannelSlider *>(fControl))
slider->SetModificationMessage(new BMessage(kMsgParameterChanged));
} else
else
ERROR("ContinuousMessageFilter: unknown continuous parameter view\n");
// set initial value
_UpdateControl();
}
@@ -626,32 +620,87 @@ ContinuousMessageFilter::~ContinuousMessageFilter()
filter_result
ContinuousMessageFilter::Filter(BMessage *message, BHandler **target)
{
BControl *control;
if (message->what != kMsgParameterChanged
|| (control = dynamic_cast<BControl *>(*target)) == NULL)
if (*target != fControl)
return B_DISPATCH_MESSAGE;
// update view
// ToDo: support for response!
// TODO: remove this work-around! We can solve this by subclassing the
// slider classes, and start watching in their AttachedToWindow() method
if (!fRegistered) {
if (BMediaRoster* roster = BMediaRoster::CurrentRoster()) {
roster->StartWatching(fControl, fParameter.Web()->Node(),
B_MEDIA_NEW_PARAMETER_VALUE);
}
fRegistered = true;
}
if (message->what == kMsgParameterChanged) {
// update parameter from control
// TODO: support for response!
float value[fParameter.CountChannels()];
if (BSlider *slider = dynamic_cast<BSlider *>(fControl)) {
value[0] = (float)(slider->Value() / 1000.0);
} else if (BChannelSlider *slider
= dynamic_cast<BChannelSlider *>(fControl)) {
for (int32 i = 0; i < fParameter.CountChannels(); i++)
value[i] = (float)(slider->ValueFor(i) / 1000.0);
}
TRACE("ContinuousMessageFilter::Filter: update view %s, %ld "
"channels\n", control->Name(), fParameter.CountChannels());
if (fParameter.SetValue((void *)value, sizeof(value),
system_time()) < B_OK) {
ERROR("ContinuousMessageFilter::Filter: Could not set parameter "
"value for %p\n", &fParameter);
return B_DISPATCH_MESSAGE;
}
return B_SKIP_MESSAGE;
}
if (message->what == B_MEDIA_NEW_PARAMETER_VALUE) {
// update view from parameter -- if the message concerns us
const media_node* node;
int32 parameterID;
ssize_t size;
if (message->FindInt32("parameter", &parameterID) != B_OK
|| fParameter.ID() != parameterID
|| message->FindData("node", B_RAW_TYPE, (const void**)&node,
&size) != B_OK
|| fParameter.Web()->Node() != *node)
return B_DISPATCH_MESSAGE;
_UpdateControl();
return B_SKIP_MESSAGE;
}
return B_DISPATCH_MESSAGE;
}
void
ContinuousMessageFilter::_UpdateControl()
{
// TODO: response support!
float value[fParameter.CountChannels()];
if (BSlider *slider = dynamic_cast<BSlider *>(control)) {
value[0] = (float)(slider->Value() / 1000.0);
} else if (BChannelSlider *slider = dynamic_cast<BChannelSlider *>(control)) {
for (int32 i = 0; i < fParameter.CountChannels(); i++)
value[i] = (float)(slider->ValueFor(i) / 1000.0);
size_t size = sizeof(value);
if (fParameter.GetValue((void *)&value, &size, NULL) < B_OK) {
ERROR("ContinuousMessageFilter: Could not get value for continuous "
"parameter %p (name '%s', node %d)\n", &fParameter,
fParameter.Name(), (int)fParameter.Web()->Node().node);
return;
}
TRACE("ContinuousMessageFilter::Filter: update view %s, %ld channels\n", control->Name(), fParameter.CountChannels());
if (fParameter.SetValue((void *)value, sizeof(value), system_time()) < B_OK) {
ERROR("ContinuousMessageFilter::Filter: Could not set parameter value for %p\n", &fParameter);
return B_DISPATCH_MESSAGE;
if (BSlider *slider = dynamic_cast<BSlider *>(fControl)) {
slider->SetValue((int32) (1000 * value[0]));
slider->SetModificationMessage(new BMessage(kMsgParameterChanged));
} else if (BChannelSlider *slider
= dynamic_cast<BChannelSlider *>(fControl)) {
for (int32 i = 0; i < fParameter.CountChannels(); i++) {
slider->SetValueFor(i, (int32) (1000 * value[i]));
}
}
return B_SKIP_MESSAGE;
}