Mixing
Curved Shape Background Header in Flutter
I have a list view with "Hero" icons on the left. When I click a list item, it loads the next screen with the article text and the Hero image (which animates nicely/automatically to the correct spot on the 2nd screen).
I would have thought that was the "tough" part, but I'm now trying to get a curved shape as the top background of the 2nd screen. I would love to make it a drawn vector shape, as opposed to a bitmap and even have it drip/bounce onto the page, but at the moment...
I'm just trying to figure out how to:
- draw a vector shape
- have it as the background of a screen with other widgets on top (see purple curve on 2nd screen below)
dart
flutter asked Jan 2 at 0:59
DaveDave
22.8k1487151
|
show 4 more comments
I have a list view with "Hero" icons on the left. When I click a list item, it loads the next screen with the article text and the Hero image (which animates nicely/automatically to the correct spot on the 2nd screen).
I would have thought that was the "tough" part, but I'm now trying to get a curved shape as the top background of the 2nd screen. I would love to make it a drawn vector shape, as opposed to a bitmap and even have it drip/bounce onto the page, but at the moment...
I'm just trying to figure out how to:
- draw a vector shape
- have it as the background of a screen with other widgets on top (see purple curve on 2nd screen below)
dart
flutter asked Jan 2 at 0:59
DaveDave
22.8k1487151
This might help you.
– Jerome Escalante
Jan 2 at 1:34
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
1
"I think there's a way to create a shape with flutter."- seeShapeBorderclass (or useCustomPaintto have the full control on what you want to draw)
– pskink
Jan 2 at 9:03
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52
|
show 4 more comments
I have a list view with "Hero" icons on the left. When I click a list item, it loads the next screen with the article text and the Hero image (which animates nicely/automatically to the correct spot on the 2nd screen).
I would have thought that was the "tough" part, but I'm now trying to get a curved shape as the top background of the 2nd screen. I would love to make it a drawn vector shape, as opposed to a bitmap and even have it drip/bounce onto the page, but at the moment...
I'm just trying to figure out how to:
- draw a vector shape
- have it as the background of a screen with other widgets on top (see purple curve on 2nd screen below)
dart
flutter asked Jan 2 at 0:59
DaveDave
22.8k1487151
I have a list view with "Hero" icons on the left. When I click a list item, it loads the next screen with the article text and the Hero image (which animates nicely/automatically to the correct spot on the 2nd screen).
I would have thought that was the "tough" part, but I'm now trying to get a curved shape as the top background of the 2nd screen. I would love to make it a drawn vector shape, as opposed to a bitmap and even have it drip/bounce onto the page, but at the moment...
I'm just trying to figure out how to:
- draw a vector shape
- have it as the background of a screen with other widgets on top (see purple curve on 2nd screen below)
dart
flutter dart
flutter asked Jan 2 at 0:59
DaveDave
22.8k1487151
asked Jan 2 at 0:59
DaveDave
22.8k1487151
asked Jan 2 at 0:59
DaveDave
22.8k1487151
asked Jan 2 at 0:59
DaveDave
22.8k1487151
asked Jan 2 at 0:59
DaveDave
22.8k1487151
22.8k1487151
This might help you.
– Jerome Escalante
Jan 2 at 1:34
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
1
"I think there's a way to create a shape with flutter."- seeShapeBorderclass (or useCustomPaintto have the full control on what you want to draw)
– pskink
Jan 2 at 9:03
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52
|
show 4 more comments
This might help you.
– Jerome Escalante
Jan 2 at 1:34
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
1
"I think there's a way to create a shape with flutter."- seeShapeBorderclass (or useCustomPaintto have the full control on what you want to draw)
– pskink
Jan 2 at 9:03
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52
This might help you.
– Jerome Escalante
Jan 2 at 1:34
This might help you.
– Jerome Escalante
Jan 2 at 1:34
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
1
1
"I think there's a way to create a shape with flutter." - see ShapeBorder class (or use CustomPaint to have the full control on what you want to draw)– pskink
Jan 2 at 9:03
"I think there's a way to create a shape with flutter." - see ShapeBorder class (or use CustomPaint to have the full control on what you want to draw)– pskink
Jan 2 at 9:03
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52
|
show 4 more comments
1 Answer
1
active
oldest
votes
I made a full sample for your curved shape in a gist here
I used CustomPainter to draw on a canvas then, with some geometric calculations, I achieved the curved shape.
Final result
How I draw it?
Before coding and on a Whiteboard I determined somethings:
My Canvas Area:
- The canvas dimensions I need to draw that shape (which equals to Flutter widget's dimensions).
How and where my brush will move?
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
e.g. lineTo() for a straight line, quadraticBezierTo() for a curve. - where means: Where are the points (coordinates) I need to draw the whole shape. (see yellow and green dots in the image above)
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
Points (coordinates) Calculations:
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
- All of my calculations depend on the canvas size, that gives me a responsive shape.
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
Full sample here!
answered Jan 2 at 10:17
Tarek360Tarek360
379312
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
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oldest
votes
active
oldest
votes
I made a full sample for your curved shape in a gist here
I used CustomPainter to draw on a canvas then, with some geometric calculations, I achieved the curved shape.
Final result
How I draw it?
Before coding and on a Whiteboard I determined somethings:
My Canvas Area:
- The canvas dimensions I need to draw that shape (which equals to Flutter widget's dimensions).
How and where my brush will move?
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
e.g. lineTo() for a straight line, quadraticBezierTo() for a curve. - where means: Where are the points (coordinates) I need to draw the whole shape. (see yellow and green dots in the image above)
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
Points (coordinates) Calculations:
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
- All of my calculations depend on the canvas size, that gives me a responsive shape.
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
Full sample here!
answered Jan 2 at 10:17
Tarek360Tarek360
379312
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
add a comment |
I made a full sample for your curved shape in a gist here
I used CustomPainter to draw on a canvas then, with some geometric calculations, I achieved the curved shape.
Final result
How I draw it?
Before coding and on a Whiteboard I determined somethings:
My Canvas Area:
- The canvas dimensions I need to draw that shape (which equals to Flutter widget's dimensions).
How and where my brush will move?
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
e.g. lineTo() for a straight line, quadraticBezierTo() for a curve. - where means: Where are the points (coordinates) I need to draw the whole shape. (see yellow and green dots in the image above)
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
Points (coordinates) Calculations:
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
- All of my calculations depend on the canvas size, that gives me a responsive shape.
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
Full sample here!
answered Jan 2 at 10:17
Tarek360Tarek360
379312
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
add a comment |
I made a full sample for your curved shape in a gist here
I used CustomPainter to draw on a canvas then, with some geometric calculations, I achieved the curved shape.
Final result
How I draw it?
Before coding and on a Whiteboard I determined somethings:
My Canvas Area:
- The canvas dimensions I need to draw that shape (which equals to Flutter widget's dimensions).
How and where my brush will move?
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
e.g. lineTo() for a straight line, quadraticBezierTo() for a curve. - where means: Where are the points (coordinates) I need to draw the whole shape. (see yellow and green dots in the image above)
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
Points (coordinates) Calculations:
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
- All of my calculations depend on the canvas size, that gives me a responsive shape.
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
Full sample here!
answered Jan 2 at 10:17
Tarek360Tarek360
379312
I made a full sample for your curved shape in a gist here
I used CustomPainter to draw on a canvas then, with some geometric calculations, I achieved the curved shape.
Final result
How I draw it?
Before coding and on a Whiteboard I determined somethings:
My Canvas Area:
- The canvas dimensions I need to draw that shape (which equals to Flutter widget's dimensions).
How and where my brush will move?
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
e.g. lineTo() for a straight line, quadraticBezierTo() for a curve. - where means: Where are the points (coordinates) I need to draw the whole shape. (see yellow and green dots in the image above)
- how means: what are the APIs I need to draw that shape on the canvas using the Path class.
Points (coordinates) Calculations:
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
- All of my calculations depend on the canvas size, that gives me a responsive shape.
- I used some geometric equations to calculate the coordinates. e.g. Point on a circle’s circumference
Full sample here!
answered Jan 2 at 10:17
Tarek360Tarek360
379312
edited Jan 3 at 6:22
answered Jan 2 at 10:17
Tarek360Tarek360
379312
answered Jan 2 at 10:17
Tarek360Tarek360
379312
answered Jan 2 at 10:17
Tarek360Tarek360
379312
379312
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
add a comment |
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
1
1
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
Works wonderfully AND serves as a great example as a learning exercise! Thanks!
– Dave
Jan 3 at 1:35
add a comment |
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This might help you.
– Jerome Escalante
Jan 2 at 1:34
@JeromeEscalante I don't think it should require masking off an image or a block of color. (should it?) I think there's a way to create a shape with flutter.
– Dave
Jan 2 at 1:38
Flutter has full blown Canvas, and Path classes if you want a lower level control instead of ClipPath solution
– Ajay Beniwal
Jan 2 at 6:29
1
"I think there's a way to create a shape with flutter."- seeShapeBorderclass (or useCustomPaintto have the full control on what you want to draw)– pskink
Jan 2 at 9:03
@pskink I saw this class, but couldn't find any reasonable examples to follow or learn. :/
– Dave
Jan 2 at 15:52