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shows an animation in the bitmap to show off offscreen bitmap drawing

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13445 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
2005-07-05 15:42:21 +00:00
parent 8e05e376ac
commit 9d42e19f61
1 changed files with 213 additions and 48 deletions
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src/tests/servers/app/bitmap_drawing/main.cpp
+213 -48
View File
@@ -1,61 +1,47 @@
// main.cpp // main.cpp
#include <math.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#include <string.h> #include <string.h>
#include "Application.h" #include <Application.h>
#include "Bitmap.h" #include <Bitmap.h>
#include "Button.h" #include <Button.h>
#include "Message.h" #include <Message.h>
#include "View.h" #include <MessageRunner.h>
#include "Window.h" #include <Messenger.h>
#include <View.h>
#include <Window.h>
#include "bitmap.h" #include "bitmap.h"
enum { enum {
MSG_RESET = 'rset', MSG_RESET = 'rset',
MSG_TICK = 'tick',
}; };
#define SPEED 2.0
// random_number_between
float
random_number_between(float v1, float v2)
{
if (v1 < v2)
return v1 + fmod(rand() / 1000.0, (v2 - v1));
else if (v2 < v1)
return v2 + fmod(rand() / 1000.0, (v1 - v2));
return v1;
}
// TestView
class TestView : public BView { class TestView : public BView {
public: public:
TestView(BRect frame, const char* name, TestView(BRect frame, const char* name,
uint32 resizeFlags, uint32 flags) uint32 resizeFlags, uint32 flags);
: BView(frame, name, resizeFlags, flags),
// fBitmap(new BBitmap(BRect(0, 0, kBitmapWidth - 1, kBitmapHeight -1),
// 0, kBitmapFormat)),
fBitmap(new BBitmap(BRect(0, 0, 32 - 1, 8 - 1),
0, B_CMAP8)),
// fBitmap(new BBitmap(BRect(0, 0, 32 - 1, 8 - 1),
// 0, B_GRAY8)),
fBitmapRect(),
fTracking(TRACKING_NONE),
fLastMousePos(-1.0, -1.0)
{
SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
SetLowColor(ViewColor());
// uint32 size = min_c((uint32)fBitmap->BitsLength(), sizeof(kBitmapBits));
// memcpy(fBitmap->Bits(), kBitmapBits, size);
uint8* bits = (uint8*)fBitmap->Bits();
uint32 width = fBitmap->Bounds().IntegerWidth() + 1;
uint32 height = fBitmap->Bounds().IntegerHeight() + 1;
uint32 bpr = fBitmap->BytesPerRow();
printf("width: %ld, height: %ld, bpr: %ld\n", width, height, bpr);
int32 index = 0;
for (uint32 y = 0; y < height; y++) {
uint8* h = bits;
for (uint32 x = 0; x < width; x++) {
*h = index++;
h++;
}
bits += bpr;
}
BRect a(0.0, 10.0, 20.0, 10.0);
BRect b(0.0, 10.0, 10.0, 30.0);
printf("Intersects: %d\n", a.Intersects(b));
_ResetRect();
}
virtual void AttachedToWindow();
virtual void MessageReceived(BMessage* message); virtual void MessageReceived(BMessage* message);
virtual void Draw(BRect updateRect); virtual void Draw(BRect updateRect);
@@ -70,7 +56,20 @@ printf("Intersects: %d\n", a.Intersects(b));
void _InvalidateBitmapRect(BRect r); void _InvalidateBitmapRect(BRect r);
void _DrawCross(BPoint where, rgb_color c); void _DrawCross(BPoint where, rgb_color c);
struct point {
double x;
double y;
double direction_x;
double direction_y;
};
void _FillBitmap(point* polygon);
void _InitPolygon(const BRect& b, point* polygon) const;
void _MorphPolygon(const BRect& b, point* polygon);
BBitmap* fBitmap; BBitmap* fBitmap;
BView* fOffscreenView;
BMessageRunner* fTicker;
BRect fBitmapRect; BRect fBitmapRect;
enum { enum {
@@ -91,25 +90,113 @@ printf("Intersects: %d\n", a.Intersects(b));
uint32 fTracking; uint32 fTracking;
BPoint fLastMousePos; BPoint fLastMousePos;
point fPolygon[4];
}; };
// constructor
TestView::TestView(BRect frame, const char* name,
uint32 resizeFlags, uint32 flags)
: BView(frame, name, resizeFlags, flags),
// fBitmap(new BBitmap(BRect(0, 0, kBitmapWidth - 1, kBitmapHeight -1), 0, kBitmapFormat)),
// fBitmap(new BBitmap(BRect(0, 0, 32 - 1, 8 - 1), 0, B_CMAP8)),
// fBitmap(new BBitmap(BRect(0, 0, 32 - 1, 8 - 1), 0, B_GRAY8)),
fBitmap(new BBitmap(BRect(0, 0, 99, 99), B_RGB32, true)),
// fBitmap(new BBitmap(BRect(0, 0, 99, 99), B_CMAP8, true)),
// fBitmap(new BBitmap(BRect(0, 0, 31, 31), B_GRAY8, true)),
fOffscreenView(new BView(fBitmap->Bounds(), "Offscreen view",
B_FOLLOW_ALL, B_WILL_DRAW | B_SUBPIXEL_PRECISE)),
fTicker(NULL),
fBitmapRect(),
fTracking(TRACKING_NONE),
fLastMousePos(-1.0, -1.0)
{
SetViewColor(B_TRANSPARENT_COLOR);
SetLowColor(ui_color(B_PANEL_BACKGROUND_COLOR));
// uint32 size = min_c((uint32)fBitmap->BitsLength(), sizeof(kBitmapBits));
// memcpy(fBitmap->Bits(), kBitmapBits, size);
/* uint8* bits = (uint8*)fBitmap->Bits();
uint32 width = fBitmap->Bounds().IntegerWidth() + 1;
uint32 height = fBitmap->Bounds().IntegerHeight() + 1;
uint32 bpr = fBitmap->BytesPerRow();
printf("width: %ld, height: %ld, bpr: %ld\n", width, height, bpr);
int32 index = 0;
for (uint32 y = 0; y < height; y++) {
uint8* h = bits;
for (uint32 x = 0; x < width; x++) {
*h = index++;
h++;
}
bits += bpr;
}
BRect a(0.0, 10.0, 20.0, 10.0);
BRect b(0.0, 10.0, 10.0, 30.0);
printf("Intersects: %d\n", a.Intersects(b));*/
if (fBitmap->Lock()) {
fBitmap->AddChild(fOffscreenView);
fOffscreenView->SetHighColor(255, 0, 0);
fBitmap->Unlock();
}
srand((long int)system_time());
_InitPolygon(fBitmap->Bounds(), fPolygon);
_ResetRect();
}
// AttachedToWindow
void
TestView::AttachedToWindow()
{
BMessenger mess(this, Window());
BMessage msg(MSG_TICK);
fTicker = new BMessageRunner(mess, &msg, 40000LL);
}
// MessageReceived // MessageReceived
void void
TestView::MessageReceived(BMessage* message) TestView::MessageReceived(BMessage* message)
{ {
if (message->what == MSG_RESET) { switch (message->what) {
BRect old = fBitmapRect; case MSG_RESET: {
_ResetRect(); BRect old = fBitmapRect;
_InvalidateBitmapRect(old | fBitmapRect); _ResetRect();
} else _InvalidateBitmapRect(old | fBitmapRect);
BView::MessageReceived(message); break;
}
case MSG_TICK:
_MorphPolygon(fBitmap->Bounds(), fPolygon);
_FillBitmap(fPolygon);
Invalidate(fBitmapRect);
break;
default:
BView::MessageReceived(message);
break;
}
} }
// Draw // Draw
void void
TestView::Draw(BRect updateRect) TestView::Draw(BRect updateRect)
{ {
SetDrawingMode(B_OP_COPY); // background arround bitmap
BRect topOfBitmap(updateRect.left, updateRect.top, updateRect.right, fBitmapRect.top - 1);
if (topOfBitmap.IsValid())
FillRect(topOfBitmap, B_SOLID_LOW);
BRect leftOfBitmap(updateRect.left, fBitmapRect.top, fBitmapRect.left - 1, fBitmapRect.bottom);
if (leftOfBitmap.IsValid())
FillRect(leftOfBitmap, B_SOLID_LOW);
BRect rightOfBitmap(fBitmapRect.right + 1, fBitmapRect.top, updateRect.right, fBitmapRect.bottom);
if (rightOfBitmap.IsValid())
FillRect(rightOfBitmap, B_SOLID_LOW);
BRect bottomOfBitmap(updateRect.left, fBitmapRect.bottom + 1, updateRect.right, updateRect.bottom);
if (bottomOfBitmap.IsValid())
FillRect(bottomOfBitmap, B_SOLID_LOW);
// bitmap
DrawBitmap(fBitmap, fBitmap->Bounds(), fBitmapRect); DrawBitmap(fBitmap, fBitmap->Bounds(), fBitmapRect);
// indicate the frame to see any errors in the drawing code // indicate the frame to see any errors in the drawing code
@@ -129,6 +216,7 @@ TestView::Draw(BRect updateRect)
DrawString(message, textPos + BPoint(-1.0, -1.0)); DrawString(message, textPos + BPoint(-1.0, -1.0));
} }
// hit_test
bool bool
hit_test(BPoint where, BPoint p) hit_test(BPoint where, BPoint p)
{ {
@@ -137,6 +225,7 @@ hit_test(BPoint where, BPoint p)
return r.Contains(where); return r.Contains(where);
} }
// hit_test
bool bool
hit_test(BPoint where, BPoint a, BPoint b) hit_test(BPoint where, BPoint a, BPoint b)
{ {
@@ -287,6 +376,81 @@ TestView::_DrawCross(BPoint where, rgb_color c)
EndLineArray(); EndLineArray();
} }
// _FillBitmap
void
TestView::_FillBitmap(point* polygon)
{
if (fBitmap->Lock()) {
fOffscreenView->SetDrawingMode(B_OP_COPY);
fOffscreenView->FillRect(fOffscreenView->Bounds(), B_SOLID_LOW);
fOffscreenView->SetDrawingMode(B_OP_OVER);
fOffscreenView->StrokeLine(BPoint(polygon[0].x, polygon[0].y),
BPoint(polygon[1].x, polygon[1].y));
fOffscreenView->StrokeLine(BPoint(polygon[1].x, polygon[1].y),
BPoint(polygon[2].x, polygon[2].y));
fOffscreenView->StrokeLine(BPoint(polygon[2].x, polygon[2].y),
BPoint(polygon[3].x, polygon[3].y));
fOffscreenView->StrokeLine(BPoint(polygon[3].x, polygon[3].y),
BPoint(polygon[0].x, polygon[0].y));
fOffscreenView->Sync();
fBitmap->Unlock();
}
}
// _InitPolygon
void
TestView::_InitPolygon(const BRect& b, point* polygon) const
{
polygon[0].x = b.left;
polygon[0].y = b.top;
polygon[0].direction_x = random_number_between(-SPEED, SPEED);
polygon[0].direction_y = random_number_between(-SPEED, SPEED);
polygon[1].x = b.right;
polygon[1].y = b.top;
polygon[1].direction_x = random_number_between(-SPEED, SPEED);
polygon[1].direction_y = random_number_between(-SPEED, SPEED);
polygon[2].x = b.right;
polygon[2].y = b.bottom;
polygon[2].direction_x = random_number_between(-SPEED, SPEED);
polygon[2].direction_y = random_number_between(-SPEED, SPEED);
polygon[3].x = b.left;
polygon[3].y = b.bottom;
polygon[3].direction_x = random_number_between(-SPEED, SPEED);
polygon[3].direction_y = random_number_between(-SPEED, SPEED);
}
// morph
inline void
morph(double* value, double* direction, double min, double max)
{
*value += *direction;
if (*value < min) {
*value = min;
*direction = -*direction;
} else if (*value > max) {
*value = max;
*direction = -*direction;
}
}
// _MorphPolygon
void
TestView::_MorphPolygon(const BRect& b, point* polygon)
{
morph(&polygon[0].x, &polygon[0].direction_x, b.left, b.right);
morph(&polygon[1].x, &polygon[1].direction_x, b.left, b.right);
morph(&polygon[2].x, &polygon[2].direction_x, b.left, b.right);
morph(&polygon[3].x, &polygon[3].direction_x, b.left, b.right);
morph(&polygon[0].y, &polygon[0].direction_y, b.top, b.bottom);
morph(&polygon[1].y, &polygon[1].direction_y, b.top, b.bottom);
morph(&polygon[2].y, &polygon[2].direction_y, b.top, b.bottom);
morph(&polygon[3].y, &polygon[3].direction_y, b.top, b.bottom);
}
// show_window // show_window
void void
show_window(BRect frame, const char* name) show_window(BRect frame, const char* name)
@@ -305,6 +469,7 @@ show_window(BRect frame, const char* name)
B_FOLLOW_LEFT | B_FOLLOW_BOTTOM); B_FOLLOW_LEFT | B_FOLLOW_BOTTOM);
view->AddChild(control); view->AddChild(control);
control->SetTarget(view); control->SetTarget(view);
control->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
window->Show(); window->Show();
} }