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Edit File: patheffects.cpython-38.pyc
U ��]�5 � @ s� d Z ddlmZ ddlmZ ddlmZ ddlmZ G dd� de �Z G dd � d e�Z G d d � d e �Z G d d � d e �ZG dd� de�ZG dd� de �ZG dd� de�ZG dd� de �ZG dd� de �ZdS )z� Defines classes for path effects. The path effects are supported in :class:`~matplotlib.text.Text`, :class:`~matplotlib.lines.Line2D` and :class:`~matplotlib.patches.Patch`. � )� RendererBase)�colors)�patches)� transformsc @ s4 e Zd ZdZd dd�Zdd� Zdd� Zd d d �Zd S )�AbstractPathEffectz� A base class for path effects. Subclasses should override the ``draw_path`` method to add effect functionality. �� r c C s || _ t�� | _dS )z� Parameters ---------- offset : pair of floats The offset to apply to the path, measured in points. N)�_offset� mtransformsZAffine2D� _offset_trans)�self�offset� r �8/usr/lib/python3/dist-packages/matplotlib/patheffects.py�__init__ s zAbstractPathEffect.__init__c C s6 |� | jd �}|� | jd �}|| j�� �||� S )z(Apply the offset to the given transform.r � )�points_to_pixelsr r �clear� translate)r �renderer� transformZoffset_xZoffset_yr r r �_offset_transform s �z$AbstractPathEffect._offset_transformc C sh |� � }|�dd�}|r$|jf |� |�� D ]6\}}t|d| d�}t|�sZtd�|���||� q,|S )z� Update the given GraphicsCollection with the given dictionary of properties. The keys in the dictionary are used to identify the appropriate set_ method on the gc. �dashesNZset_zUnknown property {0})�copy�popZ set_dashes�items�getattr�callable�AttributeError�format)r �gcZ new_gc_dictr �k�vZ set_methodr r r � _update_gc& s z AbstractPathEffect._update_gcNc C s t |t�r|j}|�||||�S )z� Derived should override this method. The arguments are the same as :meth:`matplotlib.backend_bases.RendererBase.draw_path` except the first argument is a renderer. )� isinstance�PathEffectRenderer� _renderer� draw_path�r r r �tpath�affine�rgbFacer r r r' : s z AbstractPathEffect.draw_path)r )N)�__name__� __module__� __qualname__�__doc__r r r# r' r r r r r s r c @ sZ e Zd ZdZdd� Zdd� Zdd� Zdd d �Zd d � Zd d� Z dd� Z dd� Z dd� Z dS )r% ax Implements a Renderer which contains another renderer. This proxy then intercepts draw calls, calling the appropriate :class:`AbstractPathEffect` draw method. .. note:: Not all methods have been overridden on this RendererBase subclass. It may be necessary to add further methods to extend the PathEffects capabilities further. c C s || _ || _dS )z� Parameters ---------- path_effects : iterable of :class:`AbstractPathEffect` The path effects which this renderer represents. renderer : :class:`matplotlib.backend_bases.RendererBase` instance N)� _path_effectsr& )r � path_effectsr r r r r T s zPathEffectRenderer.__init__c C s | j �� S �N)r& �new_gc)r r r r r3 ` s zPathEffectRenderer.new_gcc C s | � || j�S r2 )� __class__r& )r r1 r r r �copy_with_path_effectd s z(PathEffectRenderer.copy_with_path_effectNc C s$ | j D ]}|�| j||||� qd S r2 )r0 r' r& )r r r) r* r+ � path_effectr r r r' g s �z PathEffectRenderer.draw_pathc O s\ t | j�dkr(tj| ||||f|�|�S | jD ](}| �|g�}|j||||f|�|� q.d S �Nr )�lenr0 r � draw_markersr5 ) r r Z marker_pathZ marker_trans�path�args�kwargsr6 r r r r r9 l s ��� ��z PathEffectRenderer.draw_markersc O sX t | j�dkr&tj| |||f|�|�S | jD ]&}| �|g�}|j|||f|�|� q,d S r7 )r8 r0 r �draw_path_collectionr5 )r r Zmaster_transform�pathsr; r< r6 r r r r r= s ��� ��z'PathEffectRenderer.draw_path_collectionc C s | j �|�S r2 )r& r )r Zpointsr r r r � s z#PathEffectRenderer.points_to_pixelsc C s@ | � ||||||�\}} |�� } |�d� | j||| | d� d S )Nr )r+ )Z_get_text_path_transformZget_rgb� set_linewidthr' ) r r �x�y�sZpropZangleZismathr: r Zcolorr r r �_draw_text_as_path� s � z%PathEffectRenderer._draw_text_as_pathc C s$ |dkrt | j|�S t�| |�S d S )N)Z _text2pathZflipyZheight�width)r r& �object�__getattribute__)r �namer r r rF � s z#PathEffectRenderer.__getattribute__)N) r, r- r. r/ r r3 r5 r' r9 r= r rC rF r r r r r% G s r% c @ s e Zd ZdZdS )�Normalz� The "identity" PathEffect. The Normal PathEffect's sole purpose is to draw the original artist with no special path effect. N)r, r- r. r/ r r r r rH � s rH c s* e Zd ZdZd� fdd� Zdd� Z� ZS )�Strokez0A line based PathEffect which re-draws a stroke.�r r c s t � �|� || _dS )z� The path will be stroked with its gc updated with the given keyword arguments, i.e., the keyword arguments should be valid gc parameter values. N)�superr �_gc�r r r< �r4 r r r � s zStroke.__init__c C sH |� � }|�|� | �|| j�}| �||�}|�||||� |�� dS )z0 draw the path with updated gc. N)r3 �copy_propertiesr# rL r r' �restore)r r r r) r* r+ �gc0Ztransr r r r' � s zStroke.draw_path)rJ �r, r- r. r/ r r' � __classcell__r r rN r rI � s rI c @ s e Zd ZdZdd� ZdS )� withStrokezy Adds a simple :class:`Stroke` and then draws the original Artist to avoid needing to call :class:`Normal`. c C s( t �| |||||� |�||||� d S r2 )rI r' r( r r r r' � s zwithStroke.draw_pathN�r, r- r. r/ r' r r r r rT � s rT c s* e Zd ZdZd � fdd� Zdd� Z� ZS ) �SimplePatchShadowz#A simple shadow via a filled patch.�� ���N�333333�?c sJ t � �|� |dkr || _n t�|�| _|dkr4d}|| _|| _|| _dS )a� Parameters ---------- offset : pair of floats The offset of the shadow in points. shadow_rgbFace : color The shadow color. alpha : float The alpha transparency of the created shadow patch. Default is 0.3. http://matplotlib.1069221.n5.nabble.com/path-effects-question-td27630.html rho : float A scale factor to apply to the rgbFace color if `shadow_rgbFace` is not specified. Default is 0.3. **kwargs Extra keywords are stored and passed through to :meth:`AbstractPathEffect._update_gc`. NrZ )rK r �_shadow_rgbFace�mcolors�to_rgba�_alpha�_rhorL )r r �shadow_rgbFace�alpha�rhor< rN r r r � s zSimplePatchShadow.__init__c C s� | � ||�}|�� }|�|� | jdkr\|p.ddd� \}} } || j | | j | | j f} n| j} |�d� |�| j� |�d� | � || j �}|� |||| � |� � dS )�� Overrides the standard draw_path to add the shadow offset and necessary color changes for the shadow. N�� �?re re � Znoner ) r r3 rO r[ r_ �set_foreground� set_alphar^ r? r# rL r' rP ) r r r r) r* r+ �affine0rQ �r�g�br` r r r r' � s zSimplePatchShadow.draw_path)rW NNrZ rR r r rN r rV � s �&rV c @ s e Zd ZdZdd� ZdS )�withSimplePatchShadowz� Adds a simple :class:`SimplePatchShadow` and then draws the original Artist to avoid needing to call :class:`Normal`. c C s( t �| |||||� |�||||� d S r2 )rV r' r( r r r r' s z withSimplePatchShadow.draw_pathNrU r r r r rm s rm c s* e Zd ZdZd � fdd� Zdd� Z� ZS ) �SimpleLineShadowzA simple shadow via a line.rW r! rZ c s> t � �|� |dkr || _n t�|�| _|| _|| _|| _dS )a� Parameters ---------- offset : pair of floats The offset to apply to the path, in points. shadow_color : color The shadow color. Default is black. A value of ``None`` takes the original artist's color with a scale factor of `rho`. alpha : float The alpha transparency of the created shadow patch. Default is 0.3. rho : float A scale factor to apply to the rgbFace color if `shadow_rgbFace` is ``None``. Default is 0.3. **kwargs Extra keywords are stored and passed through to :meth:`AbstractPathEffect._update_gc`. N)rK r � _shadow_colorr\ r] r^ r_ rL )r r Z shadow_colorra rb r< rN r r r $ s zSimpleLineShadow.__init__c C s� | � ||�}|�� }|�|� | jdkr`|�� p2ddd� \}} } || j | | j | | j f} n| j} d} |�| � |�| j� | � || j �}|� |||| � |� � dS )rc Nrd rf ) r r3 rO ro Zget_foregroundr_ rg rh r^ r# rL r' rP ) r r r r) r* r+ ri rQ rj rk rl r` Z fill_colorr r r r' C s zSimpleLineShadow.draw_path)rW r! rZ rZ rR r r rN r rn " s � rn c s* e Zd ZdZd� fdd� Zdd� Z� ZS )�PathPatchEffectz| Draws a :class:`~matplotlib.patches.PathPatch` instance whose Path comes from the original PathEffect artist. rJ c s" t � j|d� tjg f|�| _dS )a� Parameters ---------- offset : pair of floats The offset to apply to the path, in points. **kwargs All keyword arguments are passed through to the :class:`~matplotlib.patches.PathPatch` constructor. The properties which cannot be overridden are "path", "clip_box" "transform" and "clip_path". )r N)rK r �mpatchesZ PathPatch�patchrM rN r r r e s zPathPatchEffect.__init__c C sX | � ||�}|| j_| j�|� | j�|�� � |�� }|rH| jj|� | j�|� d S r2 ) r rr �_pathZ set_transformZ set_clip_boxZget_clip_rectangleZ get_clip_pathZ set_clip_pathZdraw)r r r r) r* r+ Z clip_pathr r r r' t s zPathPatchEffect.draw_path)rJ rR r r rN r rp _ s rp N)r/ Zmatplotlib.backend_basesr Z matplotlibr r\ r rq r r rE r r% rH rI rT rV rm rn rp r r r r �<module> s :^ C =